Former Wildstorm editor Scott Dunbier has started a new blog which I'm sure will have many interesting stories in it as the weeks roll by.
Currently he has a neat little story about when Gil Kane worked on the covers for "WildC.A.T.S. Vs. Aliens." I'd really rather not spoil it for you, but just for starters, here is the actual cover:
If you read the post and follow Scott's link, you'll see how the original cover looked like. Apparently, there was a little bit of a miscommunication.