Just saw that he passed away recently in the Sunday obituaries. Surprised no one else here has mentioned it. While I wasn't a fan of his Western (Blueberry), once he started w/ the sci-fi, I was hooked.
His Silver Surfer work was pretty rad, too.
RIP.
I loved his work in Heavy Metal. Moebius was one of the great graphic artists of all time. R.I.P.