Jonathan Kasdan. Writer: The First Time - Dein erstes Mal vergisst Du nie!. Born September 30, 1979, Jonathan Peter Kasdan's first acting performance in a major motion picture was at the tender age of 3 in "The Big Chill" as the son of Harold, played by Kevin Kline. Then at age 5, Jonathan Kasdan went on to play an outpost boy in what many critics consider to be the best Western...