Supposedly..., they are saying the cause of Billy's death was a concussion or some other crap like that. He was on a flight, not exactly sure where, and when the landed, they landed rough and all the luggage came flying down from the storage on the top. He was hit on the head with a shitload of luggage and got a concussion. That is what i heard on the news. His family is probably going to sue the airlines for millions due to him now being unable to make millions advertising and from his recent show, "Pitchmen" on discovery channel.