Actually I don't know if I'd have selected these pics for posting, but these two get the most clicks on my (still tiny) flickr account.
First one is in Cannes, KM5D with Minolta 28-135.
Second one was at Munich Airport, KM5D with Sigma 10-20
The heli-shot was actually not easy, I was using just the center-focus point so I had to put the heli in the center of the frame, focus, and then recompose before it was gone. Only when you try this you suddenly realize how fast these beasts are.