Al Gore's new '30 Rock' cameo
November 20, 2009, 12:16 p.m.
Video: The former VP returns to <i>30 Rock</i> in honor of NBC's Green Week -- delivering an unexpectedly funny performance as the light bulb-changing janitor.
Al Gore chats about his new book
November 3, 2009, 12:05 p.m.
Video: Former vice president discusses his new book and the choices Americans face on climate change.