well i just came accross this: http://www.hamar.sk/sphere/. it's a project called Sphere XP, and well, it's XP, but turned into a sphere! you can download it as well... i think i'm going to try this on my PC. there's videos at the site it looks pretty cool. so far the only thing we've got on Macs that even comes remotely close to this is 3DOSX, which is really only horizontal. you can't look up or anything like that. from watching the vides of Sphere XP it looks really good, like you actually feel like it is 3D. but i just know that 10.4 is going to blow any of this stuff out of the water.