TV's Top Nerd Chris Hardwick Talks 'Talking Dead' and Show Formats

Sporting a Space Invader holiday sweater, Chris Hardwick, founder of Nerdist Industries , better known as host of both AMC's The Talking Dead and Comedy Central's new gameshow @midnight, appeared on CNBC's Squawk Box Tuesday morning to discuss the unique format of his “after show” for The Walking Dead and its runaway