THE SIMPSONS: (L-R) Nick Park, Ricky Gervais, JB Smoove, Russell Brand and Halle Berry make special guest voice appearances in the all new "Angry Dad: The Movie" episode of THE SIMPSONS airing Sunday, Feb. 20 (8:00-8:30 PM ET/PT) on FOX. Also pictured: THE SIMPSONS ™ and © 2011 TTCFFC ALL RIGHTS RESERVED.