William Atherton
From Wikipedia, the free encyclopedia William Atherton Knight (born July 30, 1947) is an American actor, best known for portraying Richard Thornburg in Die Hard and its sequel and Walter Peck in Ghostbusters.
Known for
Die Hard 
The Last Samurai 
Ghostbusters 
Die Hard 2 
Ghostbusters: Frozen Empire 
The Pelican Brief 
Real Genius 
The Girl Next Door 
Bio-Dome 
Mad City 
The Sugarland Express 
Clinical 
Hoodlum 
The Crow: Salvation 
Tim and Eric's Billion Dollar Movie 
Looking for Mr. Goodbar 
No Mercy 
Into the Sun 
The Hindenburg 
The Day of the Locust 
Jinn 
Introducing Dorothy Dandridge 
Headspace 
Jersey Shore Shark Attack 
Frank & Jesse 
Race to Space 
Aces 'N' Eights 
Ghostheads 
Cleanin' Up the Town: Remembering Ghostbusters 
Bad Company