You can file the book under “No Big Surprise.”

But Shapiro’s work is getting attention because it has television executives saying on the record that they’re liberal and, yes, sometimes have an agenda.

For instance, Marta Kauffman, creator of “Friends,” said there was a “bunch of liberals running the show.” And she admits it was “a bit of [expletive] you” to conservatives when the show cast Candice Gingrich, Newt Gingrich’s sister, to play a minister presiding over a lesbian wedding.

Also, “M*A*S*H” producer Gene Reynolds spills that the Korean War black comedy had pacifist leanings.

Shapiro calls out “Sesame Street” for teaching “politically correct multiculturalism” instead of “patriotism or traditional values.”

The show, he says, is about “legitimizing urban liberal lifestyles.”

“Primetime Propaganda: The True Hollywood Story of How the Left Took Over Your TV” was released by Broadside Books, a HarperCollins imprint, yesterday.

Shapiro concludes his book by ranking “The Best Conservative Shows in Television History.” For his money, “24” was the best conservative show on TV — until Janeane Garofalo joined in the seventh seven and counter terrorist agent Jack Bauer began “suffering pangs of conscience over actions he wouldn’t have blinked at the year before.”