John O'Hurley. Actor: Seinfeld. John George O'Hurley Jr. is an American actor, comedian, author, game show host and television personality. He is known for his portrayal of J. Peterman on the NBC sitcom Seinfeld, and was the sixth host of the game show Family Feud from 2006 to 2010. He also hosted To Tell the Truth from 2000 to 2002 in syndication.