I think by now you've probably read the absolutely astounding webcomic Axe Cop, the sublime comic drawn by a 29 year old and written by his 5 year old brother.  If you haven't, you should.

In a similar vein, I just discovered the super great website 5 Minute Marvels, wherein an adult and a child (or children) draw their interpretations of classic comic book characters.

I’ve included an example above, but you could seriously lose hours to this site. I know I did.

Source: 5 Minute Marvels.