Even better, the X360 "exclusives" that would interest me the most are... ports of Japanese arcade games, like Shmups and Tetris Grand Master (hence the quoting). Of course, they're almost all Japan-only and region locked, so I would have to import an NTSC-J console or mod one from the beginning. :-/
Dodonpachi is not region locked though if your into shmups. Though I read somewhere you made need an old xbox or something. I know you can get soukygurentai on PS3 with no region problems.