The art of tossing snarky comments at a bad movie has been in practice since cinema was invented, but it was perfected by Joel Hodgson via his TV creation Mystery Science Theater 3000. Since 1988, that show has survived moves from Comedy Central to SyFy to Netflix, and spawned a major-motion picture, a recent comic book series, and some fine spinoffs (Rifftrax, Cinematic Titanic). Alas, its journey may be coming to a close with its recent Netflix cancellation and the news that this current stage tour will be Hodgson’s last. Let’s riff again while we still can.