Most of the time my TV is on either Discovery, History, FX, Comedy Central, or sometimes a local station.
I love watching Pawn Stars, American Pickers, Monsterquest, any of those shows on the Freemasons and other conspiracy stuff, Cash Cab, Tosh.0, That 70s Show, Bernie Mac, Malcolm in the Middle, King of Queens, etc.
I also love watching The Fresh Prince of Bel Air and Home Improvement.
My favorite of all of those is probably That 70s Show. I've seen every episode about one million times each and it still doesn't get old.
Edit: Oh yeah, adultswim too. Moral Orel, Aqua Teen, King of the Hill, Ghost in the Shell, FLCL, etc.
Really looking forward to the premiere of Childrens Hospital.