The MST3K movie has been out of print for a long long time.
Universal might reissue it though, they've started a campaign to rerelease old DVDs that they released way back when DVD was in it's infancy, since so many of those DVDs are crappier than what they could be now.
I'm hoping they release Monty Python's Meaning of Life too just so I can be complete
And a better DVD of the Jerk.