Brogan is well known in the comedy clubs for his off the cuff adlib-style act. The Los Angeles Times has called Brogan “an absolute master at interacting with the crowd” and says, “he elevated crowd interaction to a high art.” Brogan started doing stand-up comedy in New York City in 1975. Within his first year and a half of doing stand-up he was a regular performer at the Improv, Catch a Rising Star and the Comic Strip. Brogan guest starred on The Tonight Show Starring Johnny Carson 7 times from 1984 to 1992. He also appeared on Late Night with David Letterman and the Merv Griffin Show. He hosted Laffathon on Showtime 1980-81, Comic Strip Live on Fox 1987, You Asked for it Again on the Family Channel 1992. He also hosted The Late Show on Fox in 1987 after Joan Rivers left the show. From 1992 until 2001 he appeared many times on The Tonight Show with Jay Leno doing stand-up, in written comedy pieces and in remote segments. He warmed up the studio audiences for sitcoms Taxi, Cheers, Newhart and Seinfeld as well as talk showsThe Tonight Show with Jay Leno, Late Night with David Letterman and Oprah. Almost every Sunday for the last 27 years, he has been opening for Jay Leno at the Comedy & Magic Club in Hermosa Beach. "Leno calls Brogan every Sunday to ask if they're riding together. 'He picks me up in one of his 80 exotic cars,' Brogan said. 'We ride in a different one every Sunday. This has been a ritual since 1991.'"
Writer
Brogan served as a writer for the opening monologue on The Tonight Show with Jay Leno from 1992-2001. The Los Angeles Times Magazine called him "L.A.'s premier 'joke scientist' …dissecting, analyzing, adding or subtracting ingredients" in Leno's opening monologue. During the show "Jimmy would sit to one side of the audience while Jay told his jokes. On occasion, Jimmy and Jay would make a bet to see if a certain joke worked or not. If Jimmy won, Jay would walk down the stage, and pay Jimmy. If Jay won, Jimmy would come to the stage and pay off the bet. All this was done while the camera was running."
Actor
In 1979, Brogan moved to Los Angeles to star in the sitcom Out of the Blue on ABC as Random the Angel. ABC aired 9 episodes, including the premiere episode which co-starred Robin Williams as Mork from Mork and Mindy. Brogan also appeared in an episode of Happy Days entitled "Chachi Sells his Soul" as Random to cross promote his show Out of the Blue. He had guest parts on other TV shows including Just the Ten of Us and Jerry Seinfeld’s Stand-up Confidential. Brogan also appeared in three major motion pictures: Punchline playing the younger clergyman; Steven Soderbergh’s The Informant! as psychiatrist, Dr. Miller; and Bridesmaids as the minister at the wedding.