What movies didn't make the cut?

YOUR QUESTION:
Please keep your question concise enough to ask during the livestream!
I’ve heard that for every movie that makes it onto MST3K, there are 20 that for whatever reason have NOT. For connoisseurs of cinematic garbage like myself, would it be possible to get a list of the movies that were reviewed for season 13 (or possibly even 11 & 12) but were passed over?

NAME TO CREDIT:
Bobsheaux

HOW TO PRONOUNCE IT:
Bob-show