Michael Madsen, a frequent Quentin Tarantino collaborator on films like "Reservoir Dogs" and a veteran actor in "Free Willy" and more, has died at 67.

Michael Madsen apparently went into cardiac arrest and was found unresponsive in his home in Malibu, California, on Thursday morning, according to his manager.

Michael Madsen, the actor who was a staple in numerous Quentin Tarantino films including "Kill Bill" and "Reservoir Dogs," has died. He was 67