Not that many young US or UK comics readers will know who he is... Suffice to say this is big sad news for the comics industry and SFF genre. http://www.english.rfi.fr/france/20120310-french-comic-book-illustrator-moebius-dies-paris
He was one of the greatest and most influential comic book artists ever. Very sad news that he's passed. Rest in peace, Jean Giraud.