On Saturday, I and my family went to the Miramar Air Show. On Sunday, we went to a two-year-old's birthday party. I took pictures at both. What did I learn from the comparison? Here's what: things that aren't moving are easy to take pictures of, things that are moving (like kids) are somewhat difficult to take pictures of, and things that are moving very fast (like jet fighters) are very difficult to take pictures of. Especially when you don't know which direction they're coming from and which direction they're going.
Thus, here's a picture of a WWII-era plane that was on display at the air show. One that wasn't moving at all.
Technical info: Shot with a Nikon D40 and Nikkor 18-55mm DX lens, in aperture priority exposure mode. Focal length 28mm, aperture f/8, shutter 1/800 sec, ISO 200. Post-processing in Aperture 3: Used a curve to set black and white points and add contrast, bumped vibrancy, added edge sharpening.
Thoughts for improvement: It's not bad for what it is, but it would be much better if there were another element to add some kind of tension or contrast to the image.