Yeah momento is an awesome movie, it's like the celluloid veersionof Nas's "Rewind". There's another great movie told from the end to the start called "Irreversible", but it's very disturbing and conatins some of the most graphic scenes ever captured for a film. The reverse storytelling doesn't work as well as Momento, but it's still an amazing movie, you'll never forget!
EDIT:
Made a topic for it:
viewtopic.php?f=13&t=36963Check it out it's awesome!