Uh.
Nope, not 'nuff said for me, sorry.
Actually, I keep thinking it might be the loading screen to poser 4 or poser 5; I saw both of them several thousand times, and it seems right, but I don't actually remember what they look like, and I'n not yet obsessed enough with the mystery to dust off my old version (when I installed Poser 6, Poser 4 Pro stopped working. I know it's not supposed to do that, but it did).