Although people frequently claim photographic evidence of flying saucers or aliens, skeptics like me an Phil Plait have (what should be) a simple request: Give clear pictures. Not fuzzy blobs, or poorly contrasted images, or lights with no reference in a dark sky. With all the technology available, it shouldn't be that hard.
In fact, just to demonstrate how simple this should really be, check out this article. It includes a beautifully framed, focused, and lighted image of a bear that's so rare, it's reported it was thought not to exist.
I'll admit the photographer was a professional and taking good pictures is his job. But then again, you'll have to work pretty hard to convince me no professional photographer has ever gone after UFOs.