Late last year, artist Erling Løken Andersen thought it would be a nice idea to set up a website for his Fallout fan art. It was lovely art, coming in the form of posters based on those found on the walls in Fallout games, and in a nice touch, Andersen even uploaded incredibly high-resolution (and vector!) versions so people could print out their own copies.
Enter DLA Piper, a law firm representing publishers Bethesda, who own the rights to (most of) the Fallout universe. They sent a two-page letter threatening Andersen for having distributed the art, despite the fact he was not charging for it, and that Bethesda does not itself offer such images for sale.
So Andersen sent a very polite, very considered letter back, outlining his case and why DLA Piper's points of contention don't apply to a guy giving away art on the internet. You can read both letters at the link below. The lawyers are yet to respond.
I'm sure DLA Piper are just working off a brief, and this has nothing to do with Bethesda specifically targeting the guy, but still, when you hire a firm to conduct business in your name, it's your name that gets dragged into this kind of petty bullshit.
UPDATE - Those who had grabbed a poster or two before they were taken down say they weren't just close to being replicas of posters found in actual Fallout, they were essentially recreations.
Threatened with lawsuit by Bethesda; This was my reply [Erling Løken Andersen, via NeoGAF]