Total newbie here, still looking to buy my first DSLR actually. I have one of the Sony Mega Zoom cams and went to an airshow in May and attempted to take some decent shots. I didn't care so much about the static display stuff, got there too late and there were too many people gathered around them all, but I really wanted to try to get some of the aerial stuff. I just uploaded a few to flickr and purposely uploaded some of the "bad" shots just to show you how hard it is to capture something moving 300+mph or better yet 2 of them head on with a combined closure rate of 600+. I know this will be a little easier with a better camera and less shutter lag, not to mention a better button masher, but I'm working on that too.
Blue Angels Air Show - a set on Flickr