Some lucky folks got a hold of an early uncut version of Conker's Bad Fur Day. The final version of the game removed a bunch of stuff, such as a squirrel getting operated by two Tediz while still conscious.
So what else was eventually cut out you may ask? How about a scene where one of the villains of the game beats up Pikachu for a few seconds. I can see why Nintendo wouldn't want that in the retail version. Fast forward to 2:25 to see Pikachu's little cameo.