Space Mutiny is easily the best “introduction” episode to the show for newcomers and it remains a classic that shows what MST3K is all about.
I do want to give honorable mention to Star Crash, a Jonah-era Italian attempt to do Star Wars featuring a surprisingly famous actor playing the space emperor, a cowboy drawling bounty hunter robot, and a lady wearing transparent plastic that grits her teeth a lot. It’s a good time too.
sir, another sale has hit the Wal-Mart
Being 41% of the way to boiling water sounds pretty hot to me, too.
IT’S OVER THREE HUNDRED KELVIIIIIIIIIIN!
A potential campaign without yet more tiresome “original IP do not steal” underdark/illithid rehashes!
That shit was old and boring to me since the 90s!
He’s such a bland bleakly boring person that he’d only show an improvement in character if he had a beanie hat.
“I am lobbying to change the legal definition of lemonade so no lemons are required.” 
What did Clayface do wrong, exactly, except go after a rich asshole?
The printed version, please. The movie kind of misses the point and becomes hog slop.
“You have a point about the need for society to improve somewhat, Professor Mayhem, but then you started eating babies so everything you just said is invalid! It’s awesome how the status quo doesn’t need to be changed at all!” 
forbidden nesquik
Looks like this one’s the lesser of the two weevils. 
is it really that hard to believe an animal could be sad?
People that think emotions are exclusive to human beings either never had pets or never should have had pets.
No wonder they have such raging boners for forcing people back into offices.
When he graduates, he gets a fedora.
Many times in the past, corpos have been told with substantial evidence that “crunch time” actually means less productivity overall and that well-rested employees do better work, but they like “crunch time” anyway and the cruelty is the point so they ignore that.
The Wizards of the Lost Kingdom movies are a fine slice of the fantasy side of cheese, as is the delightfully named Deathstalker and the Warriors From Hell.
Oh, and Delta Knights!
I also recommend, for those that like spy/heist/Italian weirdness, to try Diabolik, and Operation Double-Double-07.
Hard mode might be “Agent From H.A.R.M.” because there’s long stretches of very little happening, but what happens can be downright hilarious.