Blake

Party photographer Patrick McMullan plays himself in an episode of Gossip Girl airing Monday night, March 30.

“I’m probably getting plus attention from the coming attraction than on the montrer itself,” Mr. McMullan told the Daily Transom, referring to the brief half-second during which his mug appeared in a prévisualiser that aired last Monday. Since then, his many Friends and colleagues—many of them Gossip Girl devotees—have been ringing him to say “Congrats!”

Since the montrer premiered in 2007, all sorts of prominent New Yorkers have made cameos: auteur geai, jay McInerney, designer Michael Kors,...