Medium, on CBS
Allison takes a walk on the wild side when she befriends a pig that could hold the key to finding a missing activist.
Fringe, on Fox
Leonard Nimoy returns as William Bell, who finally faces off with Walter Bishop in part one of the season finale.
Mercy, on NBC
Veronica is in the right place at the right time when two boys get trapped in an abandoned building as the season winds down.
V, on ABC
Someone close to Anna is violently attacked, leading her to deliver a message that her people must leave.
House, on Fox
Zoe McLellan guest stars as an ailing woman who arrives at the hospital with no recollection of who she is.
Keeping 'Practice' alive: No mystery to medical hit's success
Kate Walsh stars in "Private Practice"
George Clooney wasn't the first, neither was Denzel Washington. TV doctors started popping up in the 1950s, though it was Richard Chamberlain in "Dr. Kildare" who really hooked viewers on the genre.
The Amazing Race, on CBS
After traveling nearly 40,000 miles, the final teams push themselves to the limit as they play to win in the season finale.
Witty web man: Tosh's Internet jabs warrant a third season
Daniel Tosh hosts the recently renewed "Tosh.0"
WITTY WEB MAN: Internet-savvy viewers who enjoy laughing at those who post ridiculous videos to YouTube and use their Twitter accounts to blog about the mundane have something in common with comedian Daniel Tosh: they all think that the Internet is a very funny place.
Saturday Night Live, on NBC
The cast and crew of America's most famous sketch-comedy series welcomes TV legend Betty White as host.
Friday Night Lights, on NBC
Coach Taylor is forced to build a new football team from scratch in the season premiere.
