Today on TV

Baseball playoffs: White Sox at Rays (12:30 p.m., TBS); Brewers at Phillies (4 p.m., TBS); Dodgers at Cubs (7:30 p.m., TBS)

Prep football (6:30 p.m., Ch. 14): Springville at Orem

Vice presidential debate (7 p.m., Channels 2, 4, 5, 7, 13, BBC America, CNN, C-SPAN, FNC, MSNBC): Sen. Joe Biden and Gov. Sarah Palin face off.

Women's college volleyball (7 p.m., The mtn.): BYU at New Mexico

College football (7 p.m., Versus): No. 15 Utah hosts Oregon State — one week after the Beavers knocked off then-No. 1 Southern California.

Supernatural (8 p.m., Ch. 30): Dean is sent back in time, where he meets his parents (who just fell in love) and the grandfather he never knew.

Survivor: Gabon (9 p.m., Ch. 2): One castaway is tossed around like a rag doll during a reward challenge; another contestant is voted out.

Ugly Betty (9 p.m., Ch. 4): Really, really funny episode that includes Betty imagining herself as the next Wilhelmina.

My Name Is Earl (9 and 9:30 p.m., Ch. 5): Earl gets Joy a hot tub; Earl and Randy accidentally turn Jerry (Jerry Van Dyke) into a killing machine.