I found a link to this post from Andy Budd's site earlier today. Whilst in a hotel in New York James Edwards found a copy of the Bible and beside it a copy of Quran. So he then thought to himself, why limit this distribution of books to religious works and got himself a few copies of The Origin of Species to leave in the draw along with the other books.
So in true we style he is trying to get everyone who thinks it's a good idea to do the same and spread the work of Evolution in the same way Gideon did with the bible.
So next time you find yourself in a hotel, pop to the bookshop around the corner and get a copy (circa £4) to leave behind for someone else to discover next time they stay.
I also suggested leaving a copy of Star Wars episode 1 for all the Jedi, but not sure it will take on.