So this will be the first time that I've gone into a film not having seen it before, only because there's a Rifftrax for it, and then deciding I need to see the film without the Rifftrax. I found it rather amazing.
Others that I saw for the first time only because of Rifftrax, but did not feel a need to watch it standalone: Fantastic Four: ROTSS, Eragon, Firewall, The Grudge, Beowulf, Spider Man 3, and Next. I think that's it.
Just thought one or two of you might find that psuedo-interesting.
