This Cocoa app works together with iChat AV to change your static buddy icon into an animation or a real video preview of yourself. Works with any Quicktime compatible video camera like: iSight, iBot, most USB or DV Firewire video cameras.
New in this version are added animation capabilities. Now you can stream any QuickTime compatible animation (like animated gifs, movies, pdfs or tiff groups).
More info and download links here.