My all-time fave show is Buffy the Vampire Slayer. It had some of the best writing ever. Love, love, love this show.
It's spin-off, Angel, was also excellent, and got to be a bit more dark.
I don't watch much TV. I tend to see things on re-run because I work nights.
But I totally ADORE CSI:NY. (Can you say Melina Kanakaredes...yum!)
I also like Family Guy, King of the Hill and Robot Chicken.
And of course, I totally grew up a fan of all the older ones that have been mentioned.
I love King of the Hill - Hank IS my Dad ...Hank looks exactly like my Dad and has the same sort of simple outlook on life.......it makes me chuckle even more because of this.