I just watched episode 311 'It Coquered the World'. I hadn't seen this episode before. Very good Invention Exchange by the mads. The hangman costume is creative, and I'm surprised I've never seen it used as a real costume before.
I loved the short Sport Parade in front of it. "A great way to blow an afternoon. Or a knee." The first segment parodying this short is very funny. Loved Tom's running at the mouth announcer and the abuse Crow gets. (Good to see Joel keep his mouth shut for the whole time, too)
This movie has a good cast, Peter Graves, Lee Van Cleef and Beverly Garland. Beverly is particularly good here, I really felt sympathy for her character, being married to a crazy husband. And she's the only capable character in the whole movie!
It also gets surprisingly dark, what with Graves having to shoot his wife. The monster...well it's goofy as hell and right up there with the carpet monster from Creeping Terror and Trumpy for silliest monster designs in MST3K movies.
The riffing is top notch, loved this episode.