Saturday Night Live Christmas 2009 8 p.m., Channel 7
Gilly! What? Gilly! What? Giiillllyyyy? WHAAAAT? Oh, the character. For some reason, “SNL’’ is having Kristen Wiig host the holiday compilation episode as Gilly, the schoolgirl with the sly expression. The two-hour special will feature old sketches (no doubt Alec Baldwin’s “Schweddy Balls’’) as well as a little bit of new material featuring Baldwin and Steve Martin.
BBQ Pitmasters 10 p.m., TLC
Why not devote your life to the art of barbecue? What’s a little extra grease on your skin? This series looks at the people who compete to be the best pitmasters, as they play chef, athlete, and general over wafting smoke and sizzling meat. Tonight, the pitmasters - Myron, Paul, Harry, Tuffy, Johnny, Lee Ann, and Jamie - vie for a $3,000 grand prize at the Riverfest Cookoff in Decatur, Ala.
CSI: Crime Scene Investigation 9 p.m., Channel 4
Shoot-out at a gun store. Well played, shooters.
The Mentalist 10 p.m., Channel 4
Jane is hit in the head by a baseball. Now known as the mentaless.
Naked Science 10 p.m., National Geographic
Ancient cave paintings. Stick figures without clothes.
Jeff Dunham’s Very Special Christmas Special 9 p.m., Comedy Central
The ventriloquist vents.
Christmas in Connecticut 8 p.m., TCM