In 1954, accomplished jazz photographer William P. Gottlieb created a Little Golden Book called Laddie the Superdog consisting of trick photos of an adorable doggie doing impossible things (it was the accompaniment to a film-strip of the same name). The results are still delightful, 56 years later, and the Kansas City Pitch's Crap Archivist does a great job bringing you the highlights. I had no idea this cat existed before now, but I've just signed up to his RSS feed.
(Thanks, Gus!)