Jennifer Hudson, The 51st Annual Grammy Awards Jennifer Hudson, The 51st Annual Grammy Awards

Grammy Awards
8 pm/ET CBS
The biggest concert of the year takes place tonight at L.A.'s Staples Center. Yeah, a few awards will be dutifully doled out over the three-hour event, but it's the stellar performances that most viewers will be talking about at work and school tomorrow, such as Kanye West and T.I. rapping "Swagga Like Us," and Taylor Swift duetting her self-penned "Fifteen" with Miley Cyrus. Lead Grammy nominee Lil Wayne also performs, as do Coldplay, U2, Paul McCartney, Radiohead and the Jonas Brothers. For nostalgia buffs, there's a Four Tops tribute headlined by Jamie Foxx and Ne-Yo. —Tim Holland

9 pm/ET NBC
The first installment of this two-part miniseries starring Stephen Dorff and Val Kilmer starts off with a bang: The first female U.S. president is assassinated during a speech. Many months later, a man (Dorff) awakens in the forest with no memory, a strange tattoo — XIII — on his chest and a finely-tuned set of reflexes. These events set the stage for a far-reaching conspiracy that threatens the entire government, and it's up to XIII to find out who he is before it's too late. —Brie Hearn

Brothers & Sisters
10:01 pm/ET ABC
Ever since Rebecca found out who her real father is, Holly has been going out of her way to discourage any meaningful contact or forming a better-late-than-never relationship with David (Ken Olin). But Rebecca knows all too well how her mother operates, and tonight she finds out about Tommy's diabolical plan to kick Holly out of the Walker family business. So really, if Rebecca needs some words of wisdom, she could do worse than turning to her irresponsible, drugged-out hippie dad for advice. —Joe Friedrich

Sonny with a Chance
8 pm/ET Disney
Disney's current It Girl, Demi Lovato of Camp Rock fame, stars in this agreeable tween sitcom as Sonny Munroe, a Wisconsin native who moves to L.A. to join the cast of a popular sketch-comedy series. It's a fresh twist on the fish-out-of-water scenario as Sonny learns about big-city life and the entertainment business the hard (but highly humorous) way. In the opener, she joins the show but isn't immediately accepted by her new colleagues. —Tim Holland

Nick News with Linda Ellerbee
9 pm/ET Nickelodeon
Tonight's episode is part of Nickelodeon's celebration of Black History Month and focuses on how children of all races are working together to bring about change in their communities — and in the world at large. Those featured include a group of high-school students in Ohio who formed a group that teaches elementary-school kids how to maintain their mixed-raced friendships as they grow up, and two Minnesota teens who put on a poetry slam based on the words of Martin Luther King Jr. —Jennifer Sankowski