Because of a pretty high end system I'd say:
Intel Core 2 Duo Q9650 CPU
4 GB Corsair RAM
2 x XFX GTX280 in SLI => 2 GB dedicated gfx RAM
Samsung SyncMaster 305T Plus 30" at 2560x1600 resolution
capturing in ½ resolution with fraps give 1280x800, cropping to
1280x720 for widescreen format produce the above result at
max gfx settings.
Actually built this machine specifically to be able to make these movies,
and also to enjoy AH to the fullest of course. So I hope you enjoy the
films. I do believe they are quite unique, have not seen anyone else doing
anything similar yet.