Overall, the machine runs completely well and smoothly compared to my iMac G4. Everything is responsive. Safari feels like IE on a PC now. It's fast and smooth.
Halo and Rainbow Six surprised me. Looks like games could run decently without being Intel-optimized, although upon checking the Get Info on both apps, Halo does not have a PowerPC or Universal tag in parentheses after its name, but Rainbow Six says "Rainbow Six (PowerPC)." Odd...
Anyhow, graphics-intesive apps seem to be no problem, although Intel-ready apps will probably make these games fly!
Emulators need some Intel-ready binaries. SNES9X and Mupen are my playable emulators. I'll be waiting for updates, RB!
H.264 is not supported by the Radeon X1600's hardware just yet. Apple will probably have drivers ready. Until then, H.264 will stay a processor task and intensive.
Love my iMac.
If you have any special requests, post away.