The first Rifftrax/MST3K movie to be part of the Criterion Collection? I actually do unironically appreciate this movie quite a bit (never actually seen the Rifftrax version).
https://www.criterion.com/films/607-carnival-of-souls
Also, Roger Ebert liked it, for what that's worth (yes, that is kind of an "argument from authority"):
http://www.rogerebert.com/reviews/carnival-of-souls-1989
Quote from: MightyBombJack on July 13, 2016, 11:11:36 AM
The first Rifftrax/MST3K movie to be part of the Criterion Collection?
Nope.
There was a rifftrax presents for this Criterion!
(https://s3.amazonaws.com/criterion-production/release_boxshots/308-230b7f20121a48e4c666328326dc75d0/40_box_348x490_original.jpg)
This is a movie in the Criterion Collection (albeit as part of a "Eclipse" box set, not a full-fledged Criterion title) I could easy imagine being riffed:
https://en.wikipedia.org/wiki/The_X_from_Outer_Space