Hysterical riffing. I took my brother for his birthday, and not only did we both laugh through the whole thing, we quoted random riffs to each other the whole way home. A small part of me secretly wished for a cameo from one of the MST3K bots, but the guys were just as funny without any puppetry involved.
I agree with other reviews that I would have either liked to see more Al, or else no Al. No mistake; he was funny, but blink and you'd have missed him.
The shorts were astonishing. Even the pre-show slideshow was hysterical.