7.Young Frankenstein: The Musical
We've done this dance before, back in 2005. The Producers was released to much consternation and ballyhooing about how it merely translated the stage play into a filmed medium. Well, here's crack 2 at the bat for Susan Stroman and Mel Brooks - a chance to throw up better choreography, film in black and white, and really play up the old horror meets Bubsy Berkley picture the two of them reveled in with the show. Also, if this does gangbusters, perhaps it'll light a fire for those involved to finally get to work on Blazing Saddles: The Musical. And that can be no bad thing.
6. Monty Python's Spamalot
Relax, this is the only other film turned into a musical proposed to turn back into a film that's being proposed (number 2 and Number 3 don't count, because they were books first.) However, Monty Python's Spamalot is just too good of an opportunity to pass up: the original film is still very much an iconic work, and the musical is touring nationwide for all to see. Depending on who you talk to though, nothing beats the original cast's charisma, which brings us to the crowning reason why this should be made into a film (and an example most show to film projects should follow)... it's an opportunity to get them all back to do it again. This time, it's for posterity, and the chance to possibly win various Hollywood awards that would look lovely next to their Tony and Grammy awards.