There is currently only one screenshot. It shows a live layer (with a layer mask inherited from the current selection). More will come as the app appearance becomes more definitive and we near the 1.0 release date. There are also some screenshot in the news.

(ChocoFlop 0.60, click for full resolution image)

(click for bigger image)

While images are nice, you can just go to the Download area and play with the real thing (which is only in alpha/beta stage currently).