Searxng/Matt Clark actor Celebrity Remember Matt Clark, the Back to the Future Part III bartender. The actor's actor, known for work with Eastwood & in Buckaroo Banzai, has died at 89. March 17, 2026 AceShowbiz - Matt Clark, a seasoned actor renowned for his role as the bartender in Back to the Future: Part III, passed away at the age of 89. His family confirmed to TMZ that he died Sunday morning at his home in Austin, Texas, due to complications following back surgery.