I'm hopeful that Rayman Origins will have a long-tail success; it would be tragic for a game this aesthetically pleasing to go unplayed by the masses. As of today, you can grab it on Steam or directly from Ubisoft for an affordable $29.99.
There's a demo as well, and as expected, the game looks stunning on PC. Perhaps best of all, if you scroll down the list of game details on Origins' Steam page, you'll see the always pleasant "No 3rd Party DRM." That's what I like to see, especially from these folks.