Nature: Ocean Giants (8pm, UNC-TV) - A three-hour special on the underwater world of whales and dolphins. Included, the human-like qualities of the animals and their reliance on sound underwater.

American Idol (8pm, Fox) - Contestants have one last chance to win over the judges before the first group of semifinalists are revealed.

Raising Renee (8pm, HBO) - NCCU professor Beverly McIver tells her story of caring for her mentally disabled sister. Adrienne's review.

Modern Family (9pm, ABC) - Gloria learns a secret that Claire has been hiding, and one of Jay's proudest golf moments is ruined by Mitchell.

Happy Endings (9:30pm, ABC) - The end of winter signals  "Spring Smackdown," when Jane (Eliza Coupe, right) and Brad (Damon Wayans Jr., right) have their annual domestic dispute.

Royal Pains (10pm, USA) - Hank struggles to accept Jack's illness in the Season 3 finale, and Evan joins Boris' cousin to look into an experimental treatment.

American Weed (10pm, National Geographic Channel) - A new short series that takes an in-depth look at Colorado's medical marijuana industry. Tonight's episode profiles Fort Collins dispensary owners who face the possibility of having their businesses shut down should voters approve Proposition 300.

CSI (10pm, CBS) - The CSIs investigate when a house is stolen from its foundation. Also, Julie displays her skills in blood analysis.

Note: No new "Revenge" tonight.

Survivor: One World (8pm, CBS) - The 24th edition of "Survivor" will have two tribes (men versus women) but living together in a single camp on a Samoan beach.

Oprah's Oscar Special (9pm, OWN) - Oprah interviews 2012 Oscar nominees Viola Davis and Octavia Spencer from "The Help" and Jonah Hill from "Moneyball."

Happy Endings (9:30pm, ABC) - Max's new boyfriend (James Wolk) is a hit with everyone, except for Dave, who sets out to prove he is equally cool. Meanwhile, Max worries he's not good enough for his "perfect" guy.

CSI (10pm, CBS) - Elizabeth Shue (left with George Eads) joins the cast as Russell's former colleague, who helps him investigate the death of a man's ex-girlfriend.

Revenge (10pm, ABC) - People close to Emily are in jeopardy when unexpected turmoil breaks out at her engagement party. Meanwhile, Jack searches for Amanda.

Royal Pains (10pm, USA) -  Jack's illness finally takes a toll on him, and Hank offers his support during the tough time. Elsewhere, Boris' cousin asks Evan for help repairing her relationship with Boris and Evan tries to help Divya fix a financial problem.

One Tree Hill (8pm, CW) - A new cafe in town gives Haley unexpected competition. Also, Chase's new girlfriend has a puzzling secret.

NC State at Boston College (8pm, WRAL) - The only CBS programming you'll miss because of this is a special about Super Bowl commercials and a repeat of "Criminal Minds." If you really want to see those, you know the drill.

Ghost Hunters (9pm, Syfy) - Jason and Grant investigate a Tennessee bed and breakfast, where there are reports of shadowy figures and images of a little girl.

Top Chef: Texas (10pm, Bravo) - The chefs make pancakes for Pee-wee Herman (Paul Reubens with Padma Lakshmi at right) and later hit the streets of San Antonio on bikes to gather ingredients for Pee-wee's big dinner party.

Royal Pains (10pm, USA) - Dr. Van Dyke fills in for Hank while he's sideline with back problems. Elsewhere, Divya and Jill come to the aid of a thief who robbed them, and Jack starts a clinical trial that yields disappointing results.

Hot in Cleveland (10pm, TV Land) - Victoria's enemy Susan Lucci comes looking for support after the cancellation of "All My Children," but Victoria warns her friends that the soap star is not to be trusted. Also, Elka (SAG Award winner Betty White) talks hoops with Baron Davis of the Cleveland Caveliers.

Nova: Mystery of a Masterpiece (9pm, UNC-TV) - Nova examines the work of art sleuths who tackle "cold case" art mysteries as well as the criminal market in stolen and fraudulent art. Includes a look at image analysis which reveals a portrait purchased for $20,000 to be a lost work of Leonardo da Vinci, which revalues the painting at $100 million.

Criminal Minds (9pm, CBS) - A serial rapist in Houston known as "The Piano Man" resurfaces and assaults his previous victims. Meanwhile, Prentiss deals with the trauma of rejoining the team.

Touch (9pm, Fox) - The debut of a new drama in which a blue-collar New York widower (Kiefer Sutherland) gets help from a social worker and an educator in an attempt to bond with his emotionally troubled son, whose obsession with numbers appears to enable him to predict the future. Adrienne has a review.

CSI (10pm, CBS) - Catherine (Marg Helgenberger, right) makes the painful decision to leave CSI. This is the final episode for Helgenberger, who has been on the show for 12 seasons. She hasn't ruled out returning for an occasional guest spot.

Royal Pains (10pm, USA) - Members of a rock band become ill, forcing Hank and Divya to figure out the cause, but the prescription debacle puts a strain on their working relationship.

Hot in Cleveland (10pm, TV Land) - Victoria's daughter arrives for a visit with the news that she and Melanie's son are engaged. Meanwhile, Joy's blind boyfriend thinks she's 26 and Elka prank-calls the New York Yankees third baseman.

Buried Treasure (8pm, Fox) - The Keno brothers visit an art-filled New Jersey home, a Vermont horse farm that was devastated by fire, and Texas family whose home might (or might not) contain unexpected treasures.

Royal Pains (9pm, USA) - In the summer finale, an art collector (Wilmer Valderrama, right) loses consciousness while viewing a piece of art he has pursued for years. Also, Hank works out a treatment for Paige's mother, against the wishes of General Collins, and Divya tries to balance the demands of HankMed and Hamptons Heritage.

Primetime Nightline: My (Extra) Ordinary Life (10pm, ABC) - Cynthia McFadden explores the medical, surgical, social, and emotional challenges facing transgender youngsters.

Hot in Cleveland (10pm, TV Land) - In the Season 2 finale, Joy and Victoria wake up to a house in disarray, full of dozing frat boys and  roaming iguana, with no recollection of Elka's bachelorette party the night before. And the bride-to-be is nowhere to be found.

Rescue Me (10pm, FX) - A major fire breaks out on the day of Colleen and Black Shawn's wedding.

Necessary Roughness (10pm, USA) - Dani tackles a playoff curse that's plagued the Hawks for years, and also turns her attention to the team's self-destructive mascot. Also, Dani's relationship with J.D. progresses.

So You Think You Can Dance (8pm, Fox) - The final four dancers perform in part one of a two-part Season 8 finale.

Royal Pains (9pm, USA) -  A local magician is affected by anxiety that causes his tricks to wrong. Elsewhere, Evan books Hank for an appearance on NBC's "Today" show with Matt Lauer (who appears as himself) without realizing that Hank is terrified of public speaking.

Roseanne's Nuts (9pm, Lifetime) - Phyllis Diller and Sandra Bernhard visit Roseanne and the three friends enjoy a night out, but Roseanne awakens the next morning with a horrible hangover and desperately searches for a cure.

Rescue Me (10pm, FX) - The fallout from Tommy's 9/11 interview  hits like a ton of bricks, and the reporter begins probing Tommy's personal life as well. This is bad news for everyone at 62 Truck.

Rocco's Dinner Party (10pm, Bravo) - Tonight's dinner party celebrates the wedding anniversary of Samantha Bee and Jason Jones, both of "The Daily Show with John Stewart." Other guests include Jonathan Adler and Simon Doonan.

Meat America (9pm, History) - Why do we eat meat? Chef Jamie Stachowski explores the history and use of beef, chicken, and pork in America.

Royal Pains (9pm, USA) - Evan spends the day at horse races with his grandfather in hopes of helping Eddie's chances of parole, but he soon learns the real reason his grandfather hasn't been in his life.

The Franchise (10pm, Showtime) - The third installment of this docu-series following the 2010 World Series champs the San Francisco Giants. Tonight's episode looks at trips to the All-Star game for charismatic closer Brian Wilson and his beard (right), Charlotte-born pitcher Ryan Vogelsong, and Barry Zito, who talks about his culinary aspirations. If you're into baseball, you can watch the full first episode at the Showtime site.

Damages (10pm, DirecTV 239) - Ellen files her suit against High Star, but her only witness, Chris Sanchez, is in Afghanistan. Also, more light is shed on Patty's connection to the case.

Rescue Me (10pm, FX) - Colleen gets some sage advice from Mike and makes an offer to Teddy that Tommy is not going to like. Also, Tommy tells Kelly about the ghosts in his life and makes an offer to Lou, who also gets some tough love from the guys, who want him to diet. Tommy decides to sit for the 9/11 TV documentary.

Rocco's Dinner Party (10pm, Bravo) - Rocco's dinner guests this week include "So You Think You Can Dance" judge Cat Deeley. You can also visit Rocco's Facebook page for a chance to win a trip to New York City to attend the October NYC Wine and Food Festival. The Watch & Win contest goes live tonight at 9 p.m.

Hot in Cleveland (10pm, TV Land) - A visit from Victoria's daughter, Emmy (Jennifer Love Hewitt), prompts Victoria to ask Elka (and her Irish accent) for help in dissuading Emmy from writing a revealing autobiography about her childhood.

The Voice (8pm, NBC) - The winning vocalist is named in the Season 1 finale. The winner gets $100,000 and a recording contract.

State of Georgia (8:30pm, ABC Family) - The series premiere of a comedy executive produced by best-selling author Jennifer Weiner ("Good in Bed") and starring Raven-Symone ("That's So Raven"). The sitcom follows Georgia (Raven-Symone) and her friend Jo (Majandra Delfino) as they move from the South to New York City and rent an apartment from Georgia's aunt (Loretta Devine).

Royal Pains (9pm, USA) - In the Season 3 premiere, Hank treats the passengers of a toppled vehicle and takes a special interest in one woman, whom he believes has more serious underlying medical problems. Elsewhere, Divya faces the repercussions of her decision not to get married.

Necessary Roughness (10pm, USA) - In this brand new drama, therapist Dani Santino (Callie Thorne) lands a job with a local football team following a nasty divorce. The series follows Dani as she counsels the high-profile football players and struggles to maintain a balance between work and family. Our review here.

Love in the Wild (10pm, NBC) - A new reality series in which twenty single people travel to Costa Rica for adventure-filled dates. There are challenges, of course, and each episode will have an elimination ceremony in which two singles go home. In tonight's episode, the group must build rafts and navigate crocodile-infested waters.

Men of a Certain Age (10pm, TNT) - Owen joins forces with Terry to shoot a new commercial for the dealership. Also, Joe works to revive his store and rebuild his life, but past relationships keep coming back to haunt him.

Perfect Couples (8:30pm, NBC) - I have decided this new sitcom about three messed up couples is unfairly maligned, so tonight I encourage everyone to give it a shot. It's not perfect (ha), but it has some solid crack-up moments. In this episode, Dave and Julia deal with jealousy after Dave meets a woman while hiking and Julia hits it off with a coworker. Not to be left out, Vance and Amy play games to make each other jealous. Also, Rex has trouble talking to Leigh about their financial troubles.

The First 48 (9pm, A&E) - A Charlotte man is stabbed to death in his car.

Royal Pains (9pm, USA) - A major storm approaches the Hamptons and Evan goes to extremes in his preparations. Hank encounters a park ranger (Jim Gaffigan) on a dangerous mission to reproduce side effects he once experienced after being struck by lightning.

Parks & Recreation (9:30pm, NBC) - Tom gets revenge on Ron (who is dating Tom's ex) by going out with Ron's ex-wife Tammy, who is played by Ron's real life wife Megan Mullally. Got it?

30 Rock (10pm, NBC) - Jack and a very pregnant Avery vacation in Canada, but when Avery goes into labor, the two desperately scramble to not give birth to a Canadian. Also, Tracy gets his EGOT but learns it comes with overwhelming demands.

Private Practice (10pm, ABC) - Charlotte's attacker (Nicholas Brendon) arrives at St. Ambrose in critical condition after being injured by his girlfriend.

Community (8pm, NBC) - Shirley (left) has big news for the group now that her ex-husband (Malcolm-Jamal Warner) is back in her life. "The Office," "30 Rock," and "Outsourced" are also all new tonight.

American Idol (8pm, Fox) - Auditions continue. Check back on Friday for our take on the new judges.

Perfect Couples (8:30pm, NBC) - This is officially the premiere of this new NBC sitcom, but they already aired an episode several weeks ago, right? It's about three sets of couples struggling with their relationships.

Royal Pains (9pm, USA) - The show returns with Hank and Evan learning more about Eddie after his heart attack.

Piers Morgan Tonight (9pm, CNN) - Ricky Gervais is the guest.

Parks and Recreation (9:30pm, NBC) - We're so happy to welcome this show back for Season 3! Tonight, Leslie (Amy Poehler) enlists Ann's help in persuading auditors (Rob Lowe and Adam Scott) to give the Parks Department more money. Elsewhere, Ron and Andy start coaching youth basketball and April has some surprising news.

Fairly Legal (10pm, USA) - A new show that fits nicely in the USA family. This one is about a lawyer-turned-mediator who tries to save her recently deceased father's firm while dealing with her own personal problems. It's enjoyable and the lead (Sarah Shahi) is likable.