The uber-analytical Dr. Brennan has never been shy about her doubts when it comes to theology, but if she is ever going to get religion, this is the night. The series' winter finale finds the team investigating the charred remains of what appears to be a demon - complete with horns and a tail - found on the altar of a Catholic church. The case spooks the God-fearing Booth, but he and Brennan are going to have to tip over some sacred cows to get to the bottom of this mystery. Joshua Malina guest stars.
* Survivor: Heroes vs. Villains: Surviving Survivor (8/7c CBS)
Survivor fans are hotly anticipating the premiere of next week's 20th edition that pits memorable "heroes" and "villains" against one another. But tonight 10 of the game's most iconic players, including previous winners Richard Hatch, Parvati Shallow and Tom Westman, discuss the series in detail and provide insights into how the game is actually played and the impact it's had on their lives. In addition, updates on beloved former castaways, like Ethan Zohn, Rupert Boneham and Elisabeth Hasselbeck, are given.
* Private Practice (10:01/9:01c ABC)
So Maya's pregnant and wants to have the baby. What to do now? Dink (Stephen Lunsford), the boy who did his part to get her into this predicament, has a solution: He wants to marry her. You can imagine how Sam and Naomi will feel about that. And if that won't raise the histrionic level enough for you, how about this: A couple has two dying daughters, and only one can be saved. Their choice. And Brian Benben is back, so expect more Pete-Violet-Sheldon angst. Rosanna Arquette guest stars.
* The Office (9/8c NBC)
There's some Sabre rattling when modern-era corporate wheeling, dealing and spieling impact Dunder Mifflin. Enter Sabre, a mysterious company headed by an unorthodox, magnetic CEO (Kathy Bates), which comes in and buys out the sinking paper outfit. Michael, never one to embrace change, balks at Sabre's new policies. Meanwhile, Andy and Erin - their potential romance still not off the ground - write a song to welcome the company. In Jim-and-Pam news, the marrieds hope for acceptance from a local day-care center.
* Why We Laugh: Black Comedians on Black Comedy (8/7c Showtime)
Robert Townsend, who directed, produced, co-wrote and starred in the inspired 1987 satire Hollywood Shuffle, about black actors trying to break into show business, codirected this documentary about the evolution of black comedy. The survey spans the early days of minstrel shows to the controversial humor of Richard Pryor and Dick Gregory, and on to popular 1970s sitcoms to the current batch of contemporary comics in the Def Comedy vein. Among those chiming in are Bill Cosby and Whoopi Goldberg. The 2008 film is not rated but contains strong language.