I only watch 2 TV-series House M.D. and Two and a half men.
If you're looking for new shows to watch you should check out Breaking Bad. It stars Bryan Cranston (from Malcolm in the Middle) as a chemistry teacher who becomes a meth dealer after finding out he has cancer.
I'm also a fan of Lost, BSG, and Prison Break among others.
More people need to check out the Wire. It's a sick ass show.
weeds is amazing