Great site. It's still in it's Beta stage but it shows great promise. Go to their site and sign up and they'll email you a password in 4 or 5 days, US subscribers only. Once you get the password, you can watch full length episodes of current and past TV shows, as well as some movies. Best part is it's FREE. You'll get a few 15-20 second ads during a 30 min. show and that's it.

http://www.hulu.com/

Their current playlist:

24
30 Days
30 Rock
The A-Team
Adam-12
Age of Love
Airwolf
Alfred Hitchcock Hour
Alfred Hitchcock Presents
American Dad!
Andy Barker P.I.
Are You Smarter Than A 5th Grader?
Arrested Development
Back To You
Battlestar Galactica
Battlestar Galactica Classic
Big Ideas for a Small Planet
Bionic Woman
The Blues Brothers
The Bob Newhart Show
Bones
The Breakfast Club
Breaking Away
Buck Rogers
Buffy the Vampire Slayer
Bulworth
Chicago Hope
Chuck
The Comebacks
Conan the Barbarian
Cops
Death Sentence
Doogie Howser, M.D.
Dr. 90210
Dragnet
Family Guy
Firsthand
Flipping out
Fox Movie Channel presents "Casting Session"
Fox Movie Channel presents "Making a Scene"
Fox Movie Channel presents "World Premier"
Friday Night Lights
Heroes
Hill Street Blues
House
Inside the Actors Studio
It's Always Sunny in Philadelphia
The Jerk
Journeyman
K-Ville
King Of The Hill
Kitchen Confidential
Kitchen Nightmares
Kojak
Las Vegas
Late Night with Conan O'Brien
Life
The Loop
Lost in Space
Lou Grant
The Mary Tyler Moore Show
Master and Commander: The Far Side of the World
McHale's Navy
Miami Vice
Monk
Murder One
My Bare Lady
My Name is Earl
Night Gallery
October Sky
The Office
Over There
Picket Fences
The Practice
The Pretender
Prison Break
Psych
Queer Eye
The Riches
Rob and Amber: Against the Odds
Saturday Night Live
Scrubs
Sideways
Simon & Simon
The Simpsons
Solitary
St. Elsewhere
Stacked
Standoff
Talkshow with Spike Feresten
The Tonight Show
Vanished
Weekend at Bernie's
WKRP in Cincinnati
Woody Woodpecker