One of the best shows, ever. I can't believe this concept made it to television, and for 10 seasons on two networks, no less. (Counting the various iterations of Comedy Central as one net, by the way.) But lucky for me it did exist, because this one hits the sweet spot as far as my sense of humor goes.
At the time this came out, I worked master control at a TV station. I would have to watch some pretty terrible movies, counting down the minutes until I switched to a commercial break (blessed relief, in some cases.) This show really spoke to me - yeah, Joel and the 'bots had to watch some pretty crappy movies, but they fought back with clever quips and jabs at the movie's stars, directors, writers et al.
And the jokes were terrifically funny. The writers on this show covered everything: pop culture, literature, insular Minnesotan references, movies and movie-making, to name only a few. They could take what are literally the worst movies ever made ('Manos: Hands of Fate', for one) and turned them into super entertainment.
I was sad when the show was cancelled by the Sci-Fi network; 10 years didn't seem like nearly enough. And I never got to see them take on 'Armageddon.' But it was great while it lasted, and we still have Rifftrax. (Check out their website or see them in a local theater: some of the same guys are doing the same hilarious movie-riffing, sans robots.)
Thanks MST3K, for teaching me to laugh about love, again.