In May, award-winning comedian Sarah Silverman sold out Columbia University's Lerner Hall for One Night Only, a special benefit concert for Project A.L.S. TheaterMania not only has special footage of this hilarious, one-time-only performance, but went backstage after the concert to speak with Silverman, Project A.L.S. co-founder Valerie Estess, and celebrity pals Katie Couric and Rob Morrow about this extremely worthy cause.