Without Corman, there's a good chance there's no John Sayles, Martin Scorsese, Gale Ann Hurd, Pam Grier, Peter Bogdanovich, Peter Fonda, or James Cameron.
He won't talk about the first movie he appeared in, but his second was Dog Day Afternoon!
His films, celebrated for their savagery, are each extensions of Gordon's sense of outraged morality.