For more than a decade, Bill Maher has set the boundaries of where funny, political talk can go on American television. First on “Politically Incorrect” (Comedy Central), and then on HBO’s “Real Time,” Maher’s combination of unflinching honesty and big laughs have garnered more than twenty Emmy nominations. Maher’s “Religulous,” an unprecedented swipe at organized religion, is one of the highest grossing documentaries ever.