MST3K 401: Space Travelers

Now out of Star Wars movies to rewatch and with petsitting over, what's there to do in a weekend? For one thing, I can get back to watching the first episode of each season of Mystery Science Theater 3000. The beginning of the fourth season is an episode unseen by several other in-order marathons... although, of course, each of them had encompassed fifty or so episodes to my four.
( 'What's a four-letter word for fiery death?' )