THE SIMPSONS: When Homer and Marge hear of Bart's engagement to his friend Mary (special guest voice Zooey Deschanel, right) to save his beloved cow Lou from the slaughterhouse, they devise a plan to save Lou and free Bart from marriage in the "Apocalypse Cow" episode of THE SIMPSONS airing Sunday, April 27 (8:00-8:30 PM ET/PT) on FOX.

THE SIMPSONS: When Homer and Marge hear of Bart's engagement to his friend Mary (special guest voice Zooey Deschanel, right) to save his beloved cow Lou from the slaughterhouse, they devise a plan to save Lou and free Bart from marriage in the "Apocalypse Cow" episode of THE SIMPSONS airing Sunday, April 27 (8:00-8:30 PM ET/PT) on FOX.