Who Do You Think You Are? (8pm, NBC) - Paula Deen visits her aunt in Georgia, who provides her with information that takes her back 150 years in her family’s history. As she digs deeper into her heritage she uncovers her ancestor’s political ties and his connection to a dark time in America’s history. Further exploration reveals a heartbreaking event that deeply impacted her ancestors during the Civil War. Unfortunately, this is the final episode of "Who Do You Think You Are," because NBC declined to renew for next season. Sadness.

Shark Tank (8pm, ABC) - The Season 3 finale includes an update on a site that sells VIP treatment at nightclubs and special events.

Nikita (8pm, CW) - The second season ends with Nikita and Michael invading Division to capture Percy.

Grimm (9pm, NBC) - The search for mysterious gold coins intensifies as the body count rises in Portland, and the arrival of a woman in black complicates matters for Nick and Hank in the Season 1 finale.

Supernatural (9pm, CW) - Season 7 concludes with Sam and Dean battling Leviathan Dick Roman and trying to stop him from carrying out his evil plans.

Who Do You Think You Are (8pm, NBC) - Jason Sudeikis ("Saturday Night Live") mines for information about his father's family history.

The Finder (8pm, Fox) - In the season (and series) finale, Walter's older brother asks him to visit their dying father, whose last wish is for his son to use his gift to find the love his life, their mother.

Fringe (9pm, Fox) - In the conclusion of the two-part Season 4 finale, the Fringe team is desperate to prevent a catastrophic event that could cause mass death and destruction.

CSI: NY (9pm, CBS) - Season 8 concludes with Mac fighting for his life after being shot while the CSIs search for the shooter.

Blue Bloods (10pm, CBS) - The second season concludes with Frank (Tom Selleck) attempting to stop a biological-weapons attack on the city, while trying to keep it a secret from his family on Mother's Day. Meanwhile, a long-standing conflict between Danny and Jamie comes to a head.

Common Law (10pm, USA) - In the premiere episode of a  new series, odd-couple detectives Wes and Travis begin couples therapy on their New Age captain's orders in an attempt to salvage their crumbling partnership. Adrienne says it's kind of blah -- here's her full review.

Who Do You Think You Are (8pm, NBC) - Rob Lowe's search of his ancestry leads to Germany and the Library of Congress. Lowe finds an unexpected connection to the Revolutionary War and America's founding fathers.

Nikita (8pm, CW) -  A plot to bankrupt Percy backfires and Percy snatches Birkhoff's life savings instead. Birkhoff is then arrested by the FBI while trying to retrieve it, and Nikita needs to free him before Division gets ahold of him.
 
Whale Wars: Viking Shores (9pm, Animal Planet) - The premiere of new "Whale Wars" spinoff following the marine-conservation group Sea Shepherd on a new campaign to stop the hunting of pilot whales in the Faroe Islands in the North Atlantic Ocean. The photo on the right isn't touched up. That's blood in the water.

Fringe (9pm, Fox) - The Fringe teams from both worlds are united by a common cause, and new developments are linked to the children from the Cortexiphan experiments.

In Plain Sight (10pm, USA) - The FBI keeps an eye on Mary after her father goes on the lam seeking vengeance. Mary tries to lose the agents tailer her in order to track her father down herself.

Blue Bloods (10pm, CBS) - A leak in the NYPD endangers a Russian mob trial witness whom Danny and Jackie are assigned to protect. Elsewhere, Erin is offered a job as deputy mayor, which would pair her with her father.

Shark Tank (8pm, ABC) - Someone actually pitches a t-shirt product with inspirational messages that become visible when the wearer perspires. Hoping at least one of the messages is: "Hello. Is it me you're looking for?"

Who Do You Think You Are (8pm, NBC) - This episode is a repeat, but it's a good one, and since I'm declaring it unofficially "Lionel Richie Night" on Happiness is a Warm TV, I'm asking that you watch. Lionel Richie charts his family history by focusing on his grandmother's ancestry.

ACM Presents: Lionel Richie and Friends in Concert (9pm, CBS) - The great Lionel Richie performs duets of his hits with Kenny Chesney, Tim McGraw, and Kenny Rogers. Other country stars -- like Jason Aldean and Lady Antebellum -- perform Richie songs on their own.

Fairly Legal (9pm, USA) - Kate tries to help a bankrupt client, who is not Lionel Richie, and who is also dealing with a drug-dealer tenant.

Also tonight, Budget Blinds CEO Chad Hallock works undercover at his window-coverings company on CBS's "Undercover Boss" at 8 p.m. You know where budget blinds look really good? In a Brick House.

Goodnight everybody!

Who Do You Think You Are (8pm, NBC) - Good luck, Edie Falco, in topping last week's incredible family history episode featuring Rita Wilson.

Grimm (9pm, NBC) - Nick's romantic getaway with Juliette turns problematic when he meets the unsettling neighbors and learns that the troubled wife has valuable treasure to protect.

Fringe (9pm, Fox) - Lincoln goes to the alternate universe to help Fauxlivia and his own doppelganger hunt for a vigilante who may be linked to shape-shifters.

Magic City (10pm, Starz) - For the nine of you who have Starz, a new series chronicling life in and around a luxury hotel in Miami Beach circa 1959. In the first episode, Ike Evans (Jeffrey Dean Morgan) must enlist the help of local mobsters to ensure the hotel's New Year's Eve concert goes well. Adrienne has a review.

Blue Bloods (10pm, CBS) - Danny reopens a closed case in which a fireman's death was ruled a suicide. The decision causes upheaval in the department, but Danny pursues the investigation at the insistence of the dead man's 12-year-old son.

In Plain Sight (10pm, USA) - Mary looks after a bigamist, who is hiding from his former employer and his two wives.

Who Do You Think You Are (8pm, NBC) - Rita Wilson takes a big fat Greek journey to trace the highs and lows of her father's life. Her travels also take her to Bulgaria.

Grimm (9pm, NBC) - Nick (Dave Giuntoli) and Monroe (Silas Weir Mitchell) investigate the murder of a spice-shop owner and the victim's sister may prove to be an ally for Nick. Also, Capt. Renard recruits Adalind to hex Hank and Sgt. Wu gets caught up in Adalind's scheme.

Fringe (9pm, Fox) - A case is familiar to Peter but brand new to the rest of the team.

Fairly Legal (9pm, USA) - Kate mediates a dispute between a fishing boat captain and an injured deckhand. Elsewhere, Nicastro encourages Lauren to date.

Blue Bloods (10pm, CBS) - Danny faces a moral dilemma over whether to arrest a suspect who may be linked to a robbery.

Merlin (10pm, Syfy) - In the Season 4 finale, Camelot is lost and Arthur is unsure that he should be king. Merlin tries to boost Arthur's confidence by leading him to the legendary Excalibur sword and encouraging him to remove it from the stone.

NCAA Basketball (CBS, TBS) - Friday's games begin at 7:15 on CBS and 7:47 on TBS. UNC plays at 7:47 on TBS and NC State tipoff will follow on TBS (expect the 10:30 p.m. area).

Who Do You Think You Are (8pm, NBC) - Oscar winner Helen Hunt investigates her paternal ancestry on a voyage that leads her to San Francisco, where she ultimately unearths information about her great-great-grandmother's involvement in the fight for women's rights.

Shark Tank (8pm, ABC) - Pitches include beer flavored ice cream and packaged meals for pets.

Fringe (9pm, Fox) - A killer targeting love is investigated by the Fringe team as Peter tries to decide what to do about Olivia.

Supernatural (9pm, CW) - Lucifer drives Sam mad and he ends up in a mental hospital.

North Woods Law (9pm, Animal Planet) - A rookie warden reponds to a report deep in the woods of a dead deer hanging by a chain and missing a leg. GROSS. This is a new series about Maine Game Wardens. Last week's premiere episode airs right before this at 8.

In Plain Sight (10pm, USA) - Mary scrambles to find child care while working on a case in which a hoarder witnessed a violent murder.

ACC Tournament: Quarterfinal Round (WRAL) - Games resume today at noon and continue through tonight. UNC plays first, Virginia plays at 2, and Duke plays at 7. Florida State gets the 9 o'clock game. Regular CBS afternoon and evening programming will either air at the regularly scheduled times on WRAL2 or on WRAL overnight. Go here to try to figure all that out. The Friday night shows you'll want to plan for are "Undercover Boss," "The Mentalist" and "Blue Bloods."

Portlandia (6:30pm, IFC) - A marathon of all episodes from Season 2 leads up to tonight's season finale at 10. In the finale, Peter and Nance wait in an endless line at a new brunch hot spot. Stars Carrie Brownstein and Fred Armisen (right) and tonight's finale guest stars Ed Begley Jr., Tim Robbins and Kyle McLachlan.

Who Do You Think You Are (8pm, NBC) - Retired NFL player Jerome Bettis investigates his family roots. He travels to Kentucky and tracks the triumph and tragedy of his great-great-grandfather's life.

Shark Tank (8pm, ABC) - Pitches include body jewelry and a "Rent-a-Grandma" business.

Grimm (9pm, NBC) - An arson-related homicide investigation brings Nick and Hank to the world of Portland fire dancing, and the case threatens Nick's relationship with Juliette.

Who Do You Think You Are (8pm, NBC) - With little knowledge about her mother's family, country singer Reba McEntire does research to see which of her ancestors was the first to set foot in America. Her search brings her to Raleigh, where she discovers an ancestor who was a prominent member in the community. According to NBC, Reba's discovery in Raleigh is connected to "one of the darkest periods in American history." As Reba continues her search, she learns of her ancestor's heartbreaking journey to America.

Shark Tank (8pm, ABC) - A guy with a clothing item he describes as "revolutionary" calls Apple co-founder Steve Wozniak for advice. Also, a follow-up on a South Carolina woman's homemade Daisy Cakes (from Season 2).

The Break (8pm, MTV) - Three young people who are homeless are followed as they work to rebuild their lives with help from homeless advocate Anne Mahlum, founder and CEO of the Back on My Feet nonprofit organization.

A Gifted Man (9pm, CBS) - In the Season 1 finale, Michael discovers a patient at the clinic has a special link to Anna. Meanwhile, Michael gets reacquainted with an old friend who has been diagnosed with a rare illness.

Portlandia (10pm, IFC) - Carrie and Fred try to get the mayor to ban the Olympics.

Blue Bloods (10pm, CBS) - A high-profile reporter and close friend of Frank (but not the former girlfriend from Season 1) is assaulted while she's out with him, and Danny and Jackie search for the would-be attacker. Meanwhile, Jamie's undercover case reaches a critical stage.

Who Do You Think You Are (8pm, NBC) - Actor Blair Underwood traces his lineage in a genealogical journey that includes a DNA test, a trip to Africa, and articles that reveal the hardships and unforeseen triumphs of his ancestors. Meredith College history professor Dr. Dan Fountain (right) was consulted and worked with Underwood for the episode. Read more about Fountain and his experience on the show.

A Gifted Man (9pm, CBS) - Michael's high school girlfriend arrives at Holy Neuro with a grave condition and he has trouble accepting the limits of what he can do to help her.

Great Performances: Memphis (10pm, UNC-TV) - A performance of the Tony Award-winning musical about a white high school dropout in 1950s Tennessee who becomes a disc jockey in order to promote the music of a black singer he has fallen for.

Merlin (10pm, Syfy) - Merlin tries to treat a mysterious illness that's inundated a distant village, but soon suspects something sinister is at play when even his spells are unable to cure the sick.

Blue Bloods (10pm, CBS) - Danny's emotional state causes concern for his wife and kids when he relentlessly searches for a killer who murdered an undercover detective. The case is personal for Danny because the victim was a Reagan family friend.