Cold Hard Interview - Gary Chalk - [coldhardslag.com] RealAudio interview with the voice of Optimus Primal. [Best viewed in Internet Explorer.] www.coldhardslag.com/interviews/chalk.html
Internet Movie Database - Filmography, trivia and other details. us.imdb.com/Name?Chalk,+Gary
inwap.com - Photo, voice credits and links. www.inwap.com/mf/Actors.html#GaryChalk
