Here's a link to a recently completed Flash version of a program I wrote several years ago that is similar to Apple's Photobooth. (Actually I finished my original version several months before Apple came out with Photobooth). It requires a webcam so it runs on most Macintoshes, but will also run on PCs with a camera.

Mugshot Machine

There's a little bit of configuring to use it the first time, but it should work immediately thereafter.

The older Macintosh standalone version is also available on my site.