John Spencer, 58

Veteran actor John Spencer died today of a heart attack in a Los Angeles hospital. He plays Leo McGarry, the former White House chief of staff and current VP candidate on NBC's "The West Wing." In last weekend's show, he had just been elevated to unofficially running the Democrats' campaign in the closing weeks before the election. Spencer, 58, had acted since he was a teenager with a recurring role on TV's "The Patty Duke Show."