Don LaFontaine, the voice behind thousands of Hollywood movie trailers, has died. He was 68.

LaFontaine's agent Vanessa Gilbert says the voiceover artist died Monday as a result of complications from the treatment of an ongoing illness at Cedars-Sinai Medical Center in Los Angeles.

LaFontaine has been a fixture in Hollywood for decades, working on about 5,000 movie trailers. Much of his fame stems from his trademark movie-trailer catch phrase, "In a world where..."