Roseanne is awesome, The Simpsons are always entertaining, Whose line is it anyway? is great, and of course Star Trek (my favorites are Voyager, TNG and DS9). As for British shows (that I've seen anyway) I love Absolutely Fabulous, Are You Being Served?, and the Vicar of Dibley.
Other than that I don't really watch tv much on purpose. I'm much happier sitting at the computer browsing Amiga.org wearing headphones and listening to mp3s :-)
-Jamie