In the style of...

10styles_100characters A friend passed this on to me today and I've been studying it ever since. It's a stack of well-known characters drawn as per the artist, but then each character in the style of that artist. (The grey squares are the originals) Amazing stuff. I can't seem to find who did it though. Any help? Watterson and Schulz are a highlight for me.

Update: This is by Finnish artist Jaako Seppala.