Mark Avery

Mark Avery
Mark Avery in 2010
Born	1960 (age 56–57) Cincinnati, Ohio, United States
Other names	Caveman
Occupation	Actor, voice actor, narrator, producer, writer

Mark Avery (born 1960 in Cincinnati, Ohio) is an American voice actor. He can be heard on commercials, movie trailers, television promos, video games, DVDs, television shows, corporate videos, and websites. He is known for his years as the voice of the National Geographic Channel, and as the voice of the narrator on Eminem's "Guilty Conscience" from his "Slim Shady LP".