When I noted the passing of Ralph McQuarrie last week, I also thought of the cartoonist Jean Giraud, and now the man who called himself Moebius is also dead. Giraud came to mind because he was one of the artists who worked on Alien, along with Ron Cobb and H.R. Giger. As influential as Star Wars was, only two years later, while The Empire Strikes Back was in production, Alien redefined the look and feel of Sci-Fi movies.