What I didn't mention is that I'm using my XSi with only center point focus and the AF on my body is completely fubar. Starting about a week ago, tracking in AI Servo is nearly impossible and yields about a 1 out of 10 shots in focus, if that. The fact that I got any of these shots at all is an absolute miracle. So, these certainly weren't meant to showcase anything, rather just share some of the shots I was actually able to pull off.
Thanks for the C&C, though. I will certainly incorporate those thoughts into future outings.