When Walter Matthau died, America lost one of its warmest and most gifted actors. While starring opposite Jack Lemmon in hits like The Odd Couple or Grumpy Old Men, Matthau could always get a laugh just by smiling and flashing the world his sheepish grin. Though he struggled with personal problems such as gambling, he enjoyed his family life over the years. Matthau's close professional relationships with both Lemmon and writer Neil Simon proved critical to his success over the years. Both Lemmon and Simon appear in this video to talk about their close friend.