Yes, I'm not here again. So that your visit was not completely wasted: blow your mind by beholding the magic of 70 Outstanding Out-of-Bounds Photos (via The Presurfer.)
I had to try this, and played with one of my around town pics. It's not as easy as it looks:
Worth1000.com has a tutorial on how to photoshop an OOB photo (in Adobe, I think) here.