This site gives a look at a neat Photobooth trick using the “4-up” picture.
Once that is done, select the picture. Then do a File -> Export. choose a “filename.gif” and hit OK. The 4-frame burst photo will export as an animated gif.
The article give a little more detail, but the comments as usual add more.
See it all here: http://www.leopardtricks.com/leopard/photobooth-makes-animated-gifs
