Jerry Seinfeld's First Tonight Show Appearance 1.51K John Trowbridge 01/09/10 09:00PM Filed to: Standup Standup Comedy jerry seinfeld tweet TV Video This is the five minute set that started Jerry Seinfeld's career. He has always said that this was the most definitive moment in his life as a comedian. Watch as Jerry introduces the world to his "what's the deal" schtick.