Push the button, Frank.

In the history of things, there have been a lot of movies released. According to the Department of Made-Up Statistics, about 87% of those movies are horrible. And there's one show that takes that 87% and makes them watchable, except one (I'm looking at you, Manos: The Hands of Fate). That show is Mystery Science Theater 3000. The premise is simple: one man, Joel Robinson, is trapped in space and forced to watch horrible B-Grade movies as part of a maniacal experiment. However, he protects himself from going mad by building a gang of robot friends with which he watches these movies and comments on them throughout the entire film. Of course, that's the premise of the first few seasons. Halfway through season five, the host changes to Mike Nelson. So after that, the plot is the same, only with a different host. The show is a zany, madcap romp through the world of bad cinema, and every episode is chock-full of memorable zingers, one-liners, and pop-culture references. I make it required watching in the Brain of Austin. (As usual, information from Wikipedia and review from the Brain of blah blah blah.)
Official MST3K Website
Official MST3K Fan Site