Anti-Dooring has information and PDF downloads (for stickers) about dooring for cyclists and bicyclists.
I was chatting with the bus driver about this a couple of weeks ago. He told me they call it "catching a door" and that's a point of pride for some drivers. One guy he knows has a door decal on his coffee mug for each door he's "caught" with a bus.
Anti-Dooring.org, via Chico Gino.