There are lots of links to other people's doodles, but by far the majority of them are for Dogs. If you cross something with a poodle these days, it results in a Somethingdoodle. This is a Labradoodle.
This guy doodles at the office. I like that he labels and sorts them. I admire people who are organized.
Here are doodles by an animator, Ward Jenkins. Its an old post, but I like them anyway. His blog looks pretty interesting too. Plus, he's a fellow Portlander.
How about some Presidential Doodles? I guess they got bored in those long cabinet meetings!
Illustrator Mauricio Salmon has a fun site.
The Box Doodle Project. I have to do one of these.
Personally, I think this is taking the whole subject too far, but if you want to know what your doodles say about you, check out the Anna Koren Graphology Center.