I'm kinda surprised I'm the first one to dive into the geek forest... but hey, I'm good for it.
Star Trek, primarily TOS and TNG, but the rest are OK at worst.
Firefly, because reasons.
Monty Python
BBC's new Sherlock is awesome for stuff that's current running.
Yeah, I'm a brony too. NO SHAME FOR LIKING GOOD ANIMATION, FUCKERS!
There's plenty of stuff I've watched for the sake of getting in-jokes, like Seinfeld and FRIENDS... and I enjoyed most of it, since, ya know, it's fun. (YAY PHEOBE!)