According to author Sam Wasson, it is. He sat down with Bill Radke to talk about his new book, "Improv Nation." The book explores what Wasson calls a great American art. Improv was founded by a social worker named Viola Spolin, who used it to help connect immigrant kids who didn’t share a language or culture. From there it gave us Nichols and May, Second City, and the early careers of many comic luminaries.