This one's quite amazing, if I do say so.
And on a somewhat unrelated side note, I love Porky Pig. Back when the Porky cartoons were in black and white, and a little racier, they used to scare the life out of me. The scariest of them being "Wholly Smoke" where Porky falls into some dream state where he encounters a world that resembles a young smoker's nightmare. Unfortunately whoever now owns the rights to that episode won't allow the video to be posted online.