Who Do You Think You Are? (7 p.m., NBC/Ch. 5): Paula Deen learns about her family history. (Series finale - NBC canceled this show.)
Nikita (7 p.m., CW/Ch. 30): Michael and Nikita infiltrate Division. (Season finale)
Whale Wars: Viking Shores (7 and 8 p.m.; 9 and 10 p.m., Animal Planet): In the last two episodes of this short series, the Sea Shepherds try to save the pilot whales from being slaughtered.
Grimm (8 p.m., NBC/Ch. 5): Nick investigates a series of murders. (Season finale)
Great Performances at the Met (8 p.m., PBS/Ch. 7): Lovers from Shakespeare's ''A Midsummer Night's Dream'' are shipwrecked on an other-worldly island in ''The Tempest.''
Supernatural (8 p.m., CW/Ch. 30): Castiel, Meg and Bobby help Sam and Dean as they do battle with the evil Dick Roman. (Season finale)
Magic City (11 p.m., Starz): Ike has to make a deal after he is caught in a lie.
Elsewhere on Saturday ...
College baseball (1 p.m., BYUtv): Santa Clara at BYU
Horse racing (2:30 p.m., NBC/Ch. 5): The Preakness - and the post time is 4:18 p.m. MDT.
Arena Football (7:30 p.m., Ch. 2.2): Arizona Rattlers at Utah Blaze
The Firm (8 p.m., NBC/Ch. 5): Mitch's client is hiding a dangerous secret.
Saturday Night Live (10:30 p.m., Ch. 30): Mike Jagger both hosts and performs.
Elsewhere on Sunday ...
60 Minutes (6 p.m., CBS/Ch. 2): A billionaire's program to pay students with promising ideas to drop out of college is attracting students and critics
America's Funniest Home Videos (6 p.m., ABC/Ch. 4): The $100,000 winner is announced. (Season finale)
2012 Billboard Music Awards (7 p.m., ABC/Ch. 4): These meaningless awards originate from Las Vegas. (Tape-delayed)
Harry's Law (7 p.m., NBC/Ch. 5): Harry has to plan her ex's funeral. (Series finale - NBC canceled this show.)
The Simpsons (7 p.m., Fox/Ch. 13): Lisa teams up with Lady Gaga. (Season finale)
The Killing (7 and 11:08 p.m., AMC): Richmond helps with the investigation.
American Ninja Warrior (7 p.m., G4): Contestants from the Southwest try to qualify.
Bob's Burgers (7:30 p.m., Fox/Ch. 13): Gene steals Bob's spotlight. (Season finale)
Jess Stone: Benefit of the Doubt (8 p.m., CBS/Ch. 2): Jesse (Tom Selleck) investigates to mob-related murders in this TV movie.
The Celebrity Apprentice (8 p.m., NBC/Ch. 5): A winner is declared. (Season finale)
Masterpiece Mystery! (8 p.m., PBS/Ch. 7): In the third and final installment of Season 2 of "Sherlock," Holmes and Moriarty face off.
Family Guy (8 and 8:30 p.m., Fox/Ch. 13): Brian and Stewie answer viewer mail; Peter battles an angry chicken. (Season finale)
Mad Men (8 and 10:04 p.m., AMC): Christmas wishes come true.
Game of Thrones (10 p.m., HBO): Robb is betrayed; Dany ignores Jorah's advice.
Nurse Jackie (10 p.m., Showtime: Jackie's lawyer tells her she's got to be tough.
Sister Wives (10 p.m., TLC): Kody tries to keep all his wives happy.
Girls (10:30 p.m., HBO): Hannah goes home to Michigan for her parents' 30th anniversary.
The Big C (10:30 p.m., Showtime): Cathy and Adam are overly generous.
Veep (11 p.m., HBO): Selina is obsessed with her nicknames.
The Borgias (11 p.m., Showtime): Alexander plans to lay siege to Sforza's castle.