Damn these lists are always hard to put together (and as per normal would change every day), I know there'll be a bunch that I highly rate but have totally forgotten about.
I'm heavily slanted towards comedy, because that's how I roll. There's so many highly rated dramas over the years that I'm sure are awesome, but just have never got around to watching!
Oh, and just to note, I am excluding wrestling shows (WWE/F & WCW) as they're probably not in the spirit of the list, even though they'd be up there!
1 - The Simpsons
2 - MacGuyver
3 - Whose Line Is It Anway? (UK)
4 - Married With Children
5 - Peep Show
6 - Seinfeld
7 - Quantum Leap
8 - The Young Ones
9 - Pulp Sport
10 - Monty Python's Flying Circus
11 - The Wonder Years
12 - Mr Bean
13 - Doctor Who (particularly the Tom Baker years)
14 - It's Always Sunny In Philadelphia
15 - Shooting Stars