If you're in San Francisco and you love Douglas Adams as much as we do, then you have absolutely no excuse for not being at The Booksmith, where Hitchhiker's Guide to the Galaxy is being tarnished forever. Six writers create erotic fanfic, and the results are read by a Shakespearean actor.
This event is described as "San Francisco's Premier Literary Erotic Fanfiction Competition," and that's probably a safe claim to make. Here's hoping for Zaphod/Zaphod slash.
Check out the poster, which makes it clear how tongue-in-cheek this is: