Perfect Dark is (finally) available as downloadable content on the 360, so if you used to play it back in the N64 days, you should be excited. If you didn't, you should be more excited because you'll be experiencing it for the first time ever. Our own Scott Alan Marriott checked it out and reports:
"Perfect Dark for Xbox Live Arcade features all of the modes, missions, and maps found on its cartridge-based predecessor. Unlike the N64 game, which chugged harder than a freshman at a frat party, this version moves at a noticeably faster frame rate. High-resolution textures have also been slapped onto the 3D objects, making the environments and characters look crisp and clean. Going from the original game to the Xbox 360 version is like walking outside with a new pair of glasses: everything is finally in focus. Of course the characters still wobble like marionettes and have expressionless faces, like they've had one Botox shot too many, but there are bound to be tradeoffs."