Steve Martin
Martin leaked his own rider, he didn't even need help from the employees at the venues. He used to request a roasted chicken (that he used as a dancing puppet), a bathing suit (just in case he wanted to go swimming later), and a book called "How to Make Money From the Banjo." He's an interesting cat, isn't he?
Van Halen
Van Halen (the whole band, not just Eddie) made some wild requests in their careers. These rockstars asked for both (on the same occasion) a bowl of M&Ms without the brown pieces, and a herring in sour cream. According to them, they would only sneak in strange requests to fill out their riders, because they usually just wanted booze and veggies.