Loading ... 
Ed Note: This blog post was written by Neil Janowitz (of 12 Angry Mascots), about how Jerry Seinfeld did an unnanounced set during one of his shows, and originally appeared on Splitsider.com.
I was told at 3:43 in the afternoon, roughly five hours before the scheduled start of 12 Angry Mascots, a sports-comedy show I co-write/produce at Gotham Comedy Club, that Jerry Seinfeld would be doing an unannounced set during our performance. Word came from my writing partner, Scott Rogowsky, who doubles as host of the show. He had been at the venue setting up when Gotham’s GM pulled him aside and told him to clear room in our run list; Jerry wanted to try out some material. (We later learned that he was testing out jokes before appearing on Letterman the following night.)
