I'm with Tisa if you're talking computers that are on the market today. However, I'm really hoping for the G5 chip. Maybe at the January Macworld... BTW, the extra thingy isn't required. I'm pretty sure you can plug in 2 of the big Apple Cinema Displays right out of the box.

Before they made me they broke the mold!
http://home.roadrunner.com/~kflach/