Among voices heard on the Rick Dees local and national radio shows, Greg Berg provided the voice of character 'John Revolting' which can also be heard on the Rick Dees Grammy nominated comedy album (with photo): 'Hurt Me Baby, Make Me Write Bad Checks'.
After the death of animation's great legendary voice actor Daws Butler, (with whom Greg had studied), animation studio 'Hanna-Barbera Prods.' had begun a 50 year anniversary show which included new lines for the Daws Butler characters-Babba Looey and Augie Doggy. Greg was hired to provide them both with reverence to his late mentor and coach.
Trained in 'legitimate comedy/character acting' for stage and television, with Harvey Lembeck (whose former students included Robin Williams, John Ritter and various Happy Days cast members.).
In Disney's (2011) The Muppets, Greg's (normal speaking) voice, can be heard briefly, as the off-screen stage manager - just before the Muppet Telethon starts.