Ah, Neil Gaiman. Quite a nice guy, and a talented author, to boot. He's willing to get a little silly for charity too, apparently. Gaiman agreed to read Dr. Seuss's childhood classic Green Eggs & Ham if the charity Worldbuilders raised $1,000,00. Behold!
More about Worldbuilders, taken from their official website:
Worldbuilders is a charity founded by author Pat Rothfuss in order to use the collective power of readers, fellow authors and book lovers to make the world a better place. During the Worldbuilders fundraiser, Pat blogs about the cool book donations we receive from authors and publishers (and all the other cool swag from artists, webcomics, etc.) Everyone who donates to Heifer International through our Team Heifer page is eligible to receive one or more of those cool books and swag at the end of the fundraiser.
All year round, we run The Tinker’s Packs where you can find cool merchandise inspired by Pat’s books, as well as foreign editions from various fantasy and sci-fi authors, and more recently some of our cool projects like our Worldbuilders and Heifer International Calendar. Profits made by the store go to Worldbuilders.