In Who Framed Roger Rabbit, during the scene where Benny the Cab crashes into a lamp post after leaving toontown, Jessica Rabbit gets thrown into the air in such a way that you can see all the way to her holiest of holies for a few frames if you run the scene in slow motion.You can find the frames in question at http://www.snopes2.com/disney/info/jesspics.htm.
Also, the original video release of that movie had single frames of Hardcore Pornography in it, ala Fight Club.