Well, my Lastfm.com statistics are going to be completely wonky when they go to compile them next Sunday. It seems I left iTunes playing all night long while I was at work (11 hours) and not only that, I left it playing on my Casey Stratton/Tori Amos playlist. So they are the only two artists who have played for the last 11 hours.
Not that this is altogether a bad thing. I've been trying to get my iTunes play counts up since my complete computer re-do in January. That's one way to do it.