FlashForward, 30 Rock, and Bones

8 p.m., ABC

FlashForward

Agents Noh (John Cho) and Banks (Alex Kingston) search for a killer that has been targeting people who haven't been experiencing their flash-forwards. Plus, the FBI discovers who Suspect Zero is.

8 p.m., FOX

Bones

In an episode written by Kathy Reichs (the real life Bones!), Brennan (Emily Deschanel) and Booth (David Boreanaz) get an unexpected tutorial on the basics of Wicca while investigating the deaths of two people found in the woods. Meanwhile, Sweets (John Francis Daley) and Edison (Eugene Byrd) are forced to improvise in the lab when Hodgins (T.J. Thyne) and Angela (Michaela Conlin) are sidetracked by Hodgins' poor driving skills.

8 p.m., NBC

Community

The Greendale campus turns into an actual battlefield when the students compete to win early class registration. War—what is it good for?

9:30 p.m., NBC

30 Rock

It's Mother's Day at TGS, and that means Mrs. Donaghy (Elaine Stritch), Mrs. Lemon (Anita Gillette), and Mrs. Maroney (Jan Hooks) are stopping by the set.

10 p.m., CBS

The Mentalist

The team hunts for the killer clown who shot down a brilliant mathematician. Obviously.

11:35 p.m., CBS

Late Show with David Letterman

Dave welcomes NBC Nightly News anchor Brian Williams.

Also on the airwaves...
Survivor, 8 p.m., CBS
The Vampire Diaries, 8 p.m., CW
Parks and Recreation, 8:30 p.m., NBC
Grey's Anatomy, 9 p.m., ABC
CSI, 9 p.m., CBS
Fringe, 9 p.m., FOX
The Office, 9 p.m., NBC
Supernatural, 9 p.m., CW
Private Practice, 10 p.m., ABC
The Marriage Ref, 10 p.m., NBC
The Real Housewives of New York City, 10 p.m., BRAVO
NBA Basketball Playoffs: Hawks v. Magic
MLB Baseball: Cubs v. Pirates

What are you watching tonight?

---

Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom