Though it may be (mostly) common knowledge that Chris Farley was originally cast as the voice of Shrek, Tommy Boy director Peter Segal recently spoke to Uproxx about how the DreamWorks Animation blockbuster, which spawned three hit sequels, was explicitly based on Farley's chemistry with best friend and Tommy Boy co-star David Spade. "After Tommy Boy, we got a lot of offers to do things together," Segal said, "and I of course was dying to find another project for us.