These days I much rather watch a a few episodes of a good TV series than a movie. I treat a season of a show as one big movie that's conveniently chopped into pieces for me. However I'm running out of ideas as to what to watch so I could use some suggestions.

Some of what I've watched and liked so far, in no particular order:

Dexter
Breaking Bad
Misfits
Homeland
The Walking Dead
Star Trek (TNG, DS9 and Voyager)
Stargate
Firefly

Good comedy shows are also appreciated:

Seinfeld
Frasier
Friends
3rd Rock from the Sun

It doesn't have to be a recent show. In fact, I prefer slightly older ones since I don't like having to wait a week to watch the next episode.