There are a host of webcomics out there that provide art free to all, but frankly most of them are subpar when it comes to providing the kind of art this thread is on about. Still, it couldn't hurt to look around... you can find everything from drunk pooka (you know, those horses you can't get off) to the adorable little girl known as God delivering newspapers door to door.
Really, I just want to pop my head in and plug the fact that I provide 'artistic services' across the Net. Check out my webcomic and see if it pulls your chain (or words to that effect). Sadly, it will cost you for an original piece, but I'm affordable.
Right, sorry about that. Apologies to anyone offended by my blatant capitalism (I'm really very sympathetic to socialism, honest).