He was the owner and founder of the Boston Comedy Club in New York City and helped launch the careers of many successful comedians, including Bill Burr, Dane Cook, Louis C.K., Kevin Brennan, Bert Kreischer, Wanda Sykes, Dave Chappelle, Whitney Cummings, as well as Saturday Night Live alumni Jay Mohr, Jim Breuer, Darrell Hammond and Tracy Morgan.

[1] Katz's friend, Eddie Brill was running a comedy club in Greenwich Village called Paper Moon, and had plans to move to Los Angeles.

[5][6] Many of Katz's clients were still teenagers when they started with his agency, including Dave Chappelle, Tracy Morgan, Jay Mohr, Jim Breuer, Jeff Ross and Wanda Sykes.

[7][8] Katz has served as an executive producer on several television shows, including the sitcom Whitney and the talent competition series The Next Best Thing and Last Comic Standing, the latter of which was nominated for an Emmy in 2004.

[2] Guests have included Norman Lear, Garry Marshall, Judd Apatow and television executives Doug Herzog and Warren Littlefield.