Jet Grind Radio was perhaps my favorite adventure title. DC Soul Calibur was the best version of SC ever, with VGA box it was a dream. Bust-a-move 4 was my favorite puzzle game... let's also not forget Powerstone 2.
But out of all of them, JGR was a pretty sick title that had style and it wasn't the easiest to unlock everything (I don't think I even unlocked everything in that game). It would be really cool to see a Jet Set Radio title on the Wii, considering the Xbox rendition didn't have a great audience for that type of game. Using the Wii-mote like a can of spraypaint for the graffiti would be cool too.