I started doing these "ransom note" collages last year. It was somewhat of a hobby for me when I was in junior high to take interesting pictures from magazines and put them together to make something new, and I thought it would be fun to do it again.
This one is a portrait of a favorite book character and contains about 30-35 separate pictures. There are tons of mistakes, but I kinda like it that way.
I like hiding personality traits in there -10 in this particular one- see how many you can find! Example: he has a "screw loose" hee hee...

Thanks Corbis photostock and google image search for some of the photos and paintings!