Red circles are things that happened during the keynote. Green question marks might have happened, but I won't know until a video is available. (UPDATE 17:25: I just noticed that the Mac Pro has a Xeon, not a Core 2 Duo, just like the Xserve. So I will be unmarking Core 2 Duo later. UPDATE 19:09: Done.)
Be sure to post your own card. I'd also like it if you bookmarked it on del.icio.us and tagged it “keynotebingo” and “keynotebingowwdc2006”.