Alcatraz (8pm, Fox) - Two new back-to-back episodes close out the season tonight. In the episodes, Rebecca and Doc close in on a man who may be the key to understanding why the criminals are returning, and a discovery is made beneath the halls of the prison.

Finding Your Roots with Henry Louis Gates Jr. (9pm, UNC-TV) - Historian Henry Louis Gates Jr. helps two New Orleans natives -- Harry Connick Jr. and Branford Marsalis (who currently lives in Durham) -- trace their roots. In a second episode airing at 10, Newark, N.J., mayor Cory Booker and Georgia representative John Lewis are researched.

Being Human (9pm, Syfy) - Sally tries to fix a life that she ruined and Josh must choose between Nora and Julia.

Smash (10pm, NBC) - Derek plots to steal the musical and he wants Karen to assist him. Meanwhile, Eileen's daughter makes a surprise visit home and Ivy is uncertain about her future.

Castle (10pm, ABC) - Five people are killed in a bomb explosion at a protest rally, and Castle and Beckett try to uncover who planted the deadly device by focusing on the crucial seconds prior to the blast.

Brooklyn 11223 (11pm, Oxygen) - A new reality show built around a three-year feud between three best friends over whether one of the women had sex with her friend's then-boyfriend. Read Adrienne's review.

Dancing with the Stars (8pm, ABC) - The 14th season begins with 12 couples dancing either the fox-trot or the cha-cha. Gladys Knight, Melissa Gilbert, and Martina Navratilova are among the dancers, but here is the full list of this season's competitors. Click below to see a photo of the full cast.

Pretty Little Liars (8pm, ABC Family) - The secret identity of "A" is revealed in tonight's season finale.

How I Met Your Mother (8pm, CBS) - The gang try to break up Barney and Quinn after learning that the couple plan to move in together.

2 Broke Girls (8:30pm, CBS) - Max and Caroline enjoy a spring getaway when they take care of a dog at a couple's ritzy apartment.

Alcatraz (9pm, Fox) - Musically inclined serial killer Webb Porter (relation to Cole?) resurfaces and causes trouble.

Hawaii Five-0 (10pm, CBS) - McGarrett's sister is arrested for allegedly smuggling $20 million in conflict diamonds. To clear her name, Steve enlists the help of a former diamond smuggler to set up a sting operation. Ed Asner reprises the role of smuggler August March, which he created on the original series, and footage from that 1975 episode is shown. In tonight's show, March is now out of prison after serving a 30-year sentence.

Smash (10pm, NBC) - The Marilyn musical is performed in front of a group of potential investors, and Ivy's confidence is weakened by her mom, a Broadway veteran. Also, repercussions await Julia and Michael.

Lost Girl (10pm, Syfy) - Bo probes a sex-related murder case with her new friend, Saskia.

The Bachelor (8pm, ABC) - It's the season finale and it seems pretty certain the doofus bachelor picks the witchy bachelorette, right? Enh, who cares anymore. Courtney and Lindzi meet Ben's mom and sister, and Ben proposes to someone (cough-Courtney-cough). In the 10 o'clock hour, Ben and the "winner" review their very public courtship and reveal their plans for the future.

The Voice (8pm, NBC) - The Battle Round continues.

Alcatraz (9pm, Fox) - An innocent man from Alcatraz resurfaces to commit crimes.

Live from the Artists Den (10pm, UNC-TV) - The full season of this music series doesn't begin until April 1, but thanks to UNC-TV's pledge drive, we're getting an early taste: a performance by Adele recorded in February 2011 at the Santa Monica Bay Woman's Club.

Smash (10pm, NBC) - Vocal problems begin to plague Ivy. Meanwhile, Julia finds it difficult to stay away from Michael and Karen books a gig as a Bar Mitzvah singer.

Navajo Cops (10pm, National Geographic Channel) - A new series following a Navajo police force on the largest Indian reservation in North America. In the premiere, officers try to track an unidentified creature after receiving numerous reports of people hearing strange noises in the middle of the night.

The Voice (8pm, NBC) - All the teams are set, so the battle round kicks off with team members facing off in duets and coaches enlisting help from star mentors such as Lionel Richie, Kelly Clarkson, Miranda Lambert (how'd they get her!?), Jewel, Alanis Morrissette, Robin Thicke, Kenneth "Babyface" Edmonds and Ne-Yo.

The Bachelor: The Women Tell All (8pm, ABC) - Ben faces the bachelorettes he rejected. And one women who is still in the running, Courtney, tearfully apologizes to the women (and hopefully to the world) for being such a witch.

Alcatraz (8pm, Fox) - Two hours of "Alcatraz" tonight. Not sure exactly how they'll do this since they have to repeat last week's preempted episode, but one of tonight's episodes will feature the Ames brothers -- two of The Rock's most violent criminals.

The Lying Game (9pm, ABC Family) - In the first season finale, a rushed wedding is planned and Sutton pressures Emma to tell Kristin what they discovered at Rebecca's.

Smash (10pm, NBC) - Karen discovers a new acting opportunity while accompanying Dev to a government party, while Ivy worries about her relationship with Derek and her spot in the show.

Love Broker (10pm, Bravo) - Matchmaker Lori Zaslow creates love connections for upscale New York clients in the premiere of this new reality series.

How I Met Your Mother (8pm, CBS) - Robin moves to the suburbs with Lily and Marshall and Ted wonders what to do with her empty room. Meanwhile, Barney decides to court a stripper.

*House (8pm, Fox) - House's mother (Diane Baker) shows up with news about a new man in her life.

Being Human (9pm, Syfy) - Josh reaches out to Nora and Sally finds out who has been haunting her. Meanwhile, Aiden is targeted by werewolf twins.

*Alcatraz (9pm, Fox) - An innocent man from Alcatraz resurfaces to commit crimes.

Hawaii Five-0 (10pm, CBS) - A famous talk-radio DJ is murdered and the investigation brings Five-0 in contact with a retired NYPD bomb expert (at James Caan, right with son Scott Caan) with ties to the victim.

Smash (10pm, NBC) - Derek hosts a party for a popular young star, reminding Karen she must propel her career. Meanwhile, Eileen tests a crafty way to secure funds and Tom dates someone new.

Lost Girl (10pm, Syfy) - Kenzi inadvertently brings home a vicious Fae spider that can make people psychotic after she performs a spiritual cleansing of a house.  

Fashion Police (10pm, E!) -  A review of last night's 2012 Academy Awards show fashions.

*Rescheduling of Daytona 500 will likely preempt "House" and "Alcatraz" tonight, but it's not 100% certain yet.

Basketball Wives (8pm, VH1) - The fourth season features two new jilted ladies.

How I Met Your Mother (8pm, CBS) - The fallout from Ted's declaratoin to Robin about his feelings for her, and Barney digs up personal dirt on Marshall and Lily.

Clinton (9pm, UNC-TV) - This first part of this two-part American Experience profile of former president Bill Clinton charts his path from Hope, Ark., to Washington, D.C., ending midway through his first term when Newt Gingrich and the GOP took control of the House and Senate. It details the scandals and setbacks Clinton weathered up to that point, and features interviews with Dick Morris, Dee Dee Myers, Robert Reich, and others. Part two airs tomorrow night. Is it worth your four-hour commitment? Read our review and decide.

Bethenny Ever After (9pm, Bravo) - Season 3 shows Bethenny as hyper-busy as ever, and Jason trying to adjust to the unwanted attention the show's success has brought.

Alcatraz (9pm, Fox) - Madsen and Hauser pursue Johnny McKee, a murderous former inmate. Also, more details about Madsen's grandfather come to light.

Castle (10pm, ABC) - In the conclusion to last week's cliffhanger episode, Beckett and Castle continue trying to stop a series of events that could lead the US into a war.

Smash (10pm, NBC) - Casting begins for the Joe DiMaggio character, and Karen returns to her hometown to attend a baby shower. Chatter indicates this is a fairly awful episode (mostly the progression of the adoption storyline), so just keep that in mind if you watch.

Gossip Girl (8pm, CW) - Nate hosts a Valentine's Day party, which Georgina crashes, and Blair tries her hand at matchmaking.

The Voice (8pm, NBC) - Round three of blind auditions continue.

Slavery by Another Name (9pm, UNC-TV) - Laurence Fishburne narrates this look at forced labor in post-Civil War America, when blacks were often arrested on and convicted of spurious charges, then leased or sold as laborers to various entities -- a practice that lasted well into the 20th century. Adapted from Wall Street Journal writer Douglas Blackmon's Pulitzer Prize-winning book of the same name.

Alcatraz (9pm, Fox) - An inmate resurfaces and plants bombs throughout populated areas of San Francisco.

BET Honors 2012 (9pm, BET) - Gabrielle Union hosts the tribute to successful black luminaries, including Maya Angelou, Stevie Wonder, Spike Lee and the Tuskegee Airmen.

Smash (10pm, NBC) - Derek makes the audition process rigorous for Karen and Ivy. Also, Eileen looks for financial backing and Julia and Frank hit bureaucratic obstacles with their international adoption plans (this storyline is the weak link in this otherwise entertaining series).

Castle (10pm, ABC) - In part one of a two-part story, Castle and Beckett work with the CIA as they hunt a killer who's connected to an international conspiracy, and the case reuintes Castle with a female CIA agent with whom he shares a past.

Not in Our Town: Class Actions (10:30pm, UNC-TV) - A look at students and communities joining forces to confront hate and bullying. Included: efforts to stop University of Mississippi football fans from chanting "the South will rise again," and the development of an anti-bullying program in Lancaster, California, after several teen suicides in nearby communities.

The Voice (8pm, NBC) - 'The Voice' follows their post-Super Bowl debut with a two-hour episode containing more blind auditions. Coaches Cee Lo Green, Christina Aguilera, Adam Levine and Blake Shelton at left.

House (8pm, Fox) - Following a violent incident involving a patient, House and the team are placed under review by the neurology chief.

The Bachelor (8pm, ABC) - The remaining women (both North Carolina women are still in the mix, but something tells me that changes tonight!) visit Panama, and hopefully, Emily from Chapel Hill can stop talking about Courtney for five seconds.

Alcatraz (9pm, Fox) - We've only seen prisoners up to now, but tonight an old guard resurfaces and encounters an old acquaintance.

Hart of Dixie (9pm, CW) - Tonight's Valentine's dance episode features a performance by Raleigh native Tift Merritt.

Smash (10pm, NBC) - This much-hyped debut of NBC's (much better!) answer to "Glee" follows a group of professional adult people staging a Broadway show. In tonight's debut, a writing duo come up with the idea to base a musical on Marilyn Monroe, and an experienced chorus girl competes against a promising newcomer. It has a great cast, which includes Debra Messing, Angelica Huston and Katharine McPhee. Here's my full review.

Lost Girl (10pm, Syfy) - Bo protects a human woman after a fury tries to hire Bo to kill her husband's mistress.

The Bachelor (8pm, ABC) - The eleven remaining women (including Emily O'Brien from Chapel Hill and Blakeley Shea from Charlotte) travel to Puerto Rico where nine of them play baseball. Blakeley is pictured here with Ben Flajnik. Also, one woman has Ben to herself for a tour of Old San Juan and another goes yachting. And there's taunting from one of the women. Or, I should say, more taunting.

House (8pm, Fox) - A teen Jane Doe needs surgery that requires adult consent. House and Adams debate whether to call Social Services until her mother shows up. Also, House threatens to exploit Foreman's relationship with a married woman.

Pretty Little Liars (8pm, ABC Family) - Hanna believes her pals are acting chilly toward her because of her stance on Caleb. Meanwhile, Emily has high hopes for her mom's visit to town.

Alcatraz (9pm, Fox) - A bank robber from the past causes mayhem in the present and puts Rebecca in a difficult position.

Cake Boss: Next Great Baker (9pm, TLC) - In the Season 2 finale, Marissa, Nadine and Ryan battle for the top spot, which includes a $100,000 prize, a feature in Brides magazine and a chance to work at Carlo's Bakery.

Being Human (9pm, Syfy) - Aidan goes on a date with a human while he is cut off from his blood supply. Also, Sally delves into reincarnation and Josh and Nora get ready for their second change together.

Gossip Girl (8pm, CW) - Amy Heckerling directs this episode in which Blair has a bachelorette party and Nate gets more information on Blair and Chuck's car wreck.

The Bachelor (8pm, ABC) - Chapel Hill and Charlotte ladies are still in the fight! Tonight the gang goes to Park City, Utah, for some outdoor activities (Charlotte's Blakeley Shea pictured here on the far left) -- and lots of drinking and crying, of course.

Antiques Roadshow (8pm, UNC-TV) - The show starts a three-episode run in Eugene, Oregon, with a Ty Cobb-autographed memorabilia, an original "Rosemary's Baby" drawing by art designer Clem Hall, and a 1919 oil painting by Norman Rockwell valued at half a million dollars.

Alcatraz (9pm, Fox) - On the loose tonight: a child killer, who would kidnap his victims and return their bodies to their homes.

Being Human (9pm, Syfy) - Sally wields new powers thanks to some new ghost friends and Josh tries to deal with a change (to say the least!) in his relationship with Nora.

Castle (10pm, ABC) - A popular reality TV star becomes a murder suspect when a well-known dog trainer turns up dead.