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Dr. Phil Plait. Dr. Plait is also know as "The Bad Astronomer." He has been on "The Late Show with Craig Ferguson," was the host of Discover\'s "Bad Universe," a consultant on "Nova," is a columnist for Slate.com, and is the author of three books including "2^7 Nerd Disses." Dr. Plait is also Dave\'s cousin. On location in Boulder, Colorado.\\xa0