Insightful and often hilarious, the latest from documentary filmmaker Alan Zweig surveys the history of Jewish comedy, from the early days of Borsht belt to the present, ultimately exploring not just ethnicity in the entertainment industry, but also the entire unruly question of what it means to be Jewish.Alan Zweig's 2013 documentary "When Jews Were Funny" surveys the often colorful history of Jewish comedy in America. The documentary is insightful, often hilarious and packed with one-liners. While taking the viewer on the journey through the history of Jewish comedy, a second journey is taken in the exploration of what it means to be Jewish in America.