* FlashForward (8/7c ABC)
Is the universe course-correcting itself? That may - or may not - be the case when Demetri and Banks pursue a killer who seems to be making amends with destiny by targeting individuals who escaped their flash-forward fates (i.e., death). Mark, meanwhile, agrees to help Simon locate his sister, but his cooperation may be put on hold when he learns the brainiac is withholding information; and Nicole discovers Keiko's whereabouts but isn't sure she wants to share that knowledge with Bryce.
Until now, forensic anthropologist and author Kathy Reichs has only been the inspiration for Dr. Temperance Brennan. Of course, this is not to diminish her contribution, but Reichs gets her first writing credit by penning this episode, which delves into the world of witchcraft. The fun starts when Brennan and Booth investigate the discovery of two corpses found in a burned-down cabin, but they need to bone up on their Wicca studies after one of the bodies dates to the 17th-century Salem witch trials.
* Sergio (8/7c HBO)
Sergio Vieira de Mello may not have been a household name, but in international humanitarian circles the charming Brazilian-born diplomat was a star. So it was no surprise that de Mello was handpicked by the United Nations to be its representative in Iraq following the 2003 U.S. invasion, a thankless post that would end in tragedy. Based on Samantha Power's biography, Greg Barker's 2009 film, a Grand Jury Prize nominee at Sundance, profiles de Mello's career and contributions to the cause of human rights.
* Survivor: Heroes vs. Villains (8/7c CBS)
Last week Russell needlessly played his hidden immunity idol, one of the few mistakes he's made thus far, and he may come to regret it even more when the castaways learn they will be competing in two immunity challenges and attending back-to-back tribal councils. Another reason Russell may need protection is that his once solid alliance with Parvati is splitting apart and he's scrambling to keep the numbers on his side. Of course, Russell is an idol magnet, so don't count out the possibility of another one coming into his possession.
* 30 Rock (9:30/8:30c NBC)
Mother's Day rocks the Rock stars with assorted mommy issues. The special day marks the arrival of Liz's mother (Anita Gillette), who reconnects with a former paramour. In addition, Jenna's oddball parent (Jan Hooks) pays a visit, and Tracy's so-called "mom" (Novella Nelson) teaches him a valuable lesson. As for romance juggler Jack, the executive continues to woo his two leading ladies - well-tended Avery (Elizabeth Banks) and modest school crush Nancy - but this time his fussy mother (Elaine Stritch) gets entangled in the messy romantic triangle. Buzz Aldrin, Cheyenne Jackson and Patti LuPone round out the guest-star roster.
* The Marriage Ref (10/9c NBC)
Jerry Seinfeld settles back into the panelist chair in this new episode. Joining him are Gwyneth Paltrow, who's been busy promoting the anticipated sequel Iron Man 2, and comedian Greg Giraldo. The trio draws on their own experiences with relationships to offer their thoughts on couples' quirky disputes.
* PGA Tour Golf (1/noon Golf)
At last week's Quail Hollow, Rory McIlroy needed an eagle on the last shot of the second round to make the cut - and he went on to set a course record with a 10-under final round to best Phil Mickelson by four strokes. Winning two days prior to his 21st birthday, McIlroy became the youngest Tour winner since Tiger Woods, who failed to make the cut for just the sixth time in his career. At this week's Players Championship, he looks to make it two in a row over Mickelson and Woods, who just happen to be the Top 2 players in the world.