Action star Arnold Schwarzenegger celebrates his 79th birthday Thursday. Here's a look back at 9 of the actor's memorable film and TV roles.

Arnold Schwarzenegger celebrated his 79th birthday with a unique request. Instead of gifts, the Hollywood legend unveiled a special fitness challenge through his Pump Club app.

Action star Arnold Schwarzenegger celebrates his 79th birthday Thursday. Here's a look back at 9 of the actor's memorable film and TV roles.