`Who is America?' features Sasha Baron Cohen's first four new characters to hit the screen in 15 years. Baron Cohen creates four new alter egos -- Billy Wayne Ruddick, Dr. Nira Cain-N'Degeocello, Rick Sherman, Col. Erran Morad -- to explore the diverse individuals who make up this unique country. These new personalities could include a far right pseudo-journalist who runs a conspiracy-theory website, an NPR shirt-wearing caricature that portrays liberal extremism, a British ex-convict, and an Israeli anti-terror expert.