The late Paul Julian is best known for his background art in Looney Tunes cartoons. According to Wikipedia, he provided the smugly chipper "Beep-Beep!" of the Roadrunner (one of the few Warner Brothers cartoon characters I can't stand).
As a sideline, Julian created the title sequences for a number of Roger Corman movies. Don't bother watching the entire movies, Julian's titles are the only part worth watching.
I wonder how much he was paid to make these for Corman? $25? $12.75? (Via Lou Romano, who has other examples of Julian's art here.)
