Hi
If you want to try something else to benchmark your iMac, you can review my thread (which I now remember I have to update...). This "benchmark" is based on handbrake encodes.
I geekbenched my early 2009 iMac and my PC gaming rig. Only 32bit benchmark though. All I can says is that the i7 3.4 iMac I have on order looks like it will blow my old iMac away and I can't wait.