After college, he began his career as an NBC page gathering coffee for the other employees. Among his other duties as a page was working for Saturday Night Live. As a Rockefeller Center tour guide, Koren would hand jokes to David Letterman and Dennis Miller as they passed in the hall, which landed him a writing gig on SNL.[2] He also occasionally acted for the series.[3]
While at SNL, he wrote/co-wrote Weekend Update, Mary Katherine Gallagher, The Roxbury Guys, Adam Sandler’s The Denise Show, The Joe Pesci Show, Jim Carrey’s Hot Tub Lifeguard, among many other sketches.
In addition, he helped write and performed on Adam Sandler’s Platinum debut album They’re All Gonna Laugh at You.
"The Millennium" (May 1, 1997) - as the character Steve Koren "The Dealership" (January 8, 1998) - as the Cab Driver "The Finale" (May 14, 1998) - as a Juror
Emmy Award nominee (1992, 1993) for Outstanding Individual Achievement in Writing in a Variety or Music Program; the nomination was shared with other writers for Saturday Night Live
Emmy Award nominee (1998) for Outstanding Comedy Series; the nomination was shared with other writers for Seinfeld
Steve Baker, Ricky Blitt, Will Carlough, Tobias Carlson, Jacob Fleisher, Patrik Forsberg, Will Graham, James Gunn, Claes Kjellstrom, Jack Kukoda, Bob Odenkirk, Bill O'Malley, Matthew Alec Portenoy, Greg Pritikin, Rocky Russo, Olle Sarri, Elizabeth Wright Shapiro, Jeremy Sosenko, Jonathan van Tulleken, and Jonas Wittenmark – Movie 43 (2013)