I call it the rotation change, I haven't read/seen the method in a book/DVD yet so I'm not sure if I'm just reinventing an already invented move. Anyway this is my version, I've used it to reveal 2 or more selected cards. Let me know if it can be found somewhere or if it has a name.
Oh and sorry about the video quality, I tried to make it better for hours but my slow comp made me give up on that

http://www.youtube.com/watch?v=o-Q6CIACZm8