Nina Katchadourian clearly has a sense of humor and/or a lot of patience. She did a 6 week series on spider webs. By "on" I don't mean "about spider webs", I mean literally, as part of the web. But, like much "outsider art" her work was rejected.
Nina's Website on the project
I love the fact that this "news" story just hit boing boing (and my blog) but occurred 10 years ago.