Shrek (partially found original Chris Farley dialogue of CGI-animated comedy film; 1990s)
It is a little known fact that SNL funnyman Chris Farley was the original actor cast as the voice of the title character in the DreamWorks animated film, Shrek. According to the Jim Hill Media website, the plot with Farley on board was somewhat different than what ended up on film. "It was about a teenage ogre who wasn't all that eager to go into the family business. You see, young Shrek didn't really want to frighten people. He longed to make friends, help people. This ogre actually dreamed of becoming a knight". Those involved with recording Farley labelled it one of his best performances. Unfortunately, with about 80-90% of his role finished, Farley died from a drug overdose on December 18, 1997 at the age of 33, still working on the film just a week before his death. There were talks of having a vocal impersonator brought in to record the remaining lines, but ultimately, fellow Saturday Night Live cast member Mike Myers was hired and the script was re-written.
The studio had not released any of the audio, and nothing had been heard of it by the public, until the early morning hours of August 5, 2015, when Reddit user Bttfan shared a VimeoPro video uploaded by Dreamworks Development Producer, John Garbett showing a two and a half minute scene from the film's early storyboard reel, featuring Farley's voice. Time will tell if any more footage will surface.