PanosFX makes a whole list of super creative Photoshop actions. My favorites are the page curl and out of bounds effects. I've also used the snow globe action and reflections as well - all free. I would love to see what what you do with do these.
Here's the link and some examples, top Out of Bounds, bottom Page Curl:
I already played a little with these effects...I definitely had some problems with the "out of bounds effects" that I kind of gave it up...but in your picture it looks so cool. Need to start trying again.
@Isa - yes, keep trying, it takes some practice. One thing I found is that it helps to have the right picture.