Perhaps most well known for co-creating and executive producing the comedic web series Nostalgia Critic, he is also recognized for producing Shut Up and Talk, Bum Reviews, and Ask That Guy with the Glasses. Also an actor, he made numerous appearances in the shows he produced.
At the start of his career, he launched the Nostalgia Critic series on YouTube (it later moved to Channel Awesome) and also executive produced a series titled Demo Reel.
Aside from his endeavors in the entertainment industry, he worked as a physical therapist.
He spent his youth in Chicago, Illinois, and later married Erin Walker. His younger brother, Doug Walker, is the other half of the Nostalgia Critic team.
He and Rob Dyke both created popular web-based comedy programs.