Mr. Cobham is one of my personal drum influences. My first exposure to his playing was hearing the "Spectrum" album (1973) when I was in high school. He was also one of the first to use synthesizers to process drums and he usually did it in real time (not over dubbed). His kit sound and playing technique always sounded so "21st century" to me back in the '70s.
He has a great website (http://www.billycobham.com/
) with personal blogs and a nice forum. Billy even joins the discussions when he can (username "Boomer").