“Total Finale Live” (8 p.m., MTV): A galaxy of stars, including Justin Timberlake,

“Total Finale Live” (8 p.m., MTV): A galaxy of stars, including Justin Timberlake, Christina Aguilera, Mariah Carey, Beyonc , the Backstreet Boys and Kid Rock, is set to bid farewell to “Total Request Live,” the ground-breaking video countdown series that launched careers and became a youth-culture sensation. After 10 years and more than 2,000 episodes, “TRL” is going on an indefinite hiatus. Among the scheduled highlights of the two-hour send-off is a one-time-only rap collaboration by Ludacris, Snoop Dogg and Nelly. They’ll join current “TRL” host Damien Fahey and former host Carson Daly as they relive some of the show’s greatest moments and biggest discoveries.

“Deserving Design” (8 p.m., HGTV): Vern Yip helps a family who helps others.

“Expedition Week” (9 p.m., National Geographic Channel): The weeklong series digs into history and explores the mysteries of pyramids and the Lost Cities of the Amazon.

“Jeff Dunham’s Very Special Christmas Special” (9 p.m., Comedy Central): The man with the puppets adds his spin to holiday proceedings.

“Nick News with Linda Ellerbee” (9 p.m., Nickelodeon): In that way she has of getting inside children’s heads, Linda Ellerbee is exploring a question lots of kids have surely contemplated: What’s it like for their peers who are wheelchair-bound? Four kids — afflicted with muscular dystrophy, a spinal cord injury, cerebral palsy and spina bifida — invite the audience to share “the view from my chair” on “Nick News with Linda Ellerbee.” Then those children briefly defy their chief nemesis as they and Ellerbee go on a zero-gravity flight, achieving temporary weightlessness. But even life on planet Earth doesn’t get the kids down. “I can get around as much as regular people can get around, just in a different way,” says one, though acknowledging, “I think about going to heaven and being able to walk.”

“Filth” (9 p.m., PBS): Mary Whitehouse finds sexual innuendo wherever she looks: in plays, soap operas and documentaries, not to mention the b-word (that is, “bloody” — Mary is a consumer of British media). Her answer is Clean Up TV, a grass-roots movement to combat the “filth, violence and degradation.” Does this true story sound familiar? However much it may resemble popular protests against media content that persist to the current day, Mary’s particular cleanup crusade was launched in the early 1960s when Mary, shocked by the teatime broadcast of a BBC program about premarital sex, declared war on the innovative, taboo-busting BBC boss, Sir Hugh Greene. Now that saga has been transformed into the comedy “Filth,” an edition of PBS’ “Masterpiece” starring Julie Walters as Mary and Hugh Bonneville as Sir Hugh. Their climactic clash arises from the BBC’s scheduled Christmas 1967 broadcast of The Beatles’ psychedelic film “Magical Mystery Tour,” whose largely nonsensical “I Am the Walrus” (goo, goo, g’joob!) contained one all-too-provocative word for Mary: knickers!

“Desperate Housewives” (9 p.m., ABC): They’ve got the usual chaos happening on “Desperate Housewives.” A deadly fire breaks out in the club where the Wisteria Lane guys are competing in the Battle of the Bands. Meanwhile, Lynette learns more about the shenanigans going on between her son and Anne Schilling (Gail O’Grady).

“JFK: Inside the Target Car” (9 p.m., Discovery Channel): “JFK: Inside the Target Car” is yet another documentary that obsesses over the assassination of President John F. Kennedy. This one claims to use cutting-edge forensics and Zapruder film archives to definitively prove that the fatal bullet was indeed fired from the Texas School Book Depository.