Remote Control (1988)
This one deserves riffing basically because the irony of it is the fact the core of the movie actually centers around a bad B-flick which the Rifftrax crew would more likely riff.
Here's the plot, Kevin Dillon (from the updated 'The Blob' and Matt Dillon's bro) plays as a video store clerk, Cosmo (no kidding), who unwittingly stumbles across this alien plot to brainwash people with a '50s film called (surprise, surprise) 'Remote Control.'
(Heck, if the aliens wanted to make people go insane, just have them capture folks into a theater showing nothing but 'Manos' with those 'Norman' shorts.)
Anyhoo, the real hilarity comes from the fact the brainwashing occurs when anyone reaching the portion of the film by seeing themselves. Not to mention the fact the henchmen use the film as a guide to discover what Cosmo and his friends will do next, in an attempt to stop them.
Strangely, this was a direct-to-video film which was surreal for the fact we never really get to see the 'aliens' behind this plot. Makes you ponder if they got this suggestion from those guys behind 'Plan 9 from Outer Space.'
This one would be excellent for Rifftrax to do VOD or Live.
I remember this one, which is really weird since it has to be around 20 years ago since I actually watched it. It relies on stupid henchmen, but what villain doesn't, to stop him. As Forest Gump wisely said, "Stupid is as, as stupid does."