Jack Klugman Dies — ‘Odd Couple’ Star Dead at 90 December 25, 2012 - by Celebrity News Wire Jack Klugman — who famously portrayed Oscar Madison on TV’s “The Odd Couple” back in the ’70s — died yesterday at the age of 90. According to Klugman’s family — the actor had been convalescing for a while, but died unexpectedly. Klugman’s cause…