Character Len Lesser, who appeared in 15 episodes of the classic Seinfeld TV series, has died from pneumonia at age 88. Lesser gained popularity as Seinfeld's obnoxious Uncle Leo, a loudmouth, unscrupulous schemer. Lesser had a long career in films and TV. Among the features he appeared in: Kelly's Heroes, The Outlaw Josey Wales, Birdman of Alcatraz, Papillon and Some Came Running. For more click here