Before becoming a screenwriter, he wrote for the music publications Rolling Stone magazine and Crawdaddy!, where he met and befriended Timothy White.

He collaborated with friend and writing partner Michael O'Donoghue on several projects, most notably the holiday comedy Scrooged that starred Bill Murray.

He was also good friends with John Belushi, and wrote the novelization for The Blues Brothers under the pen name "Miami Mitch."

Glazer is friends with actors Bill Murray and Mickey Rourke, who was two years ahead of him at Miami Beach High School.

In a 2024 interview on the New Heights Podcast with Jason and Travis Kelce, Bill Murray confirmed that he would prank call Glazer anytime he was watching the sex scene between Glazer's wife, Kelly Lynch, and Patrick Swayze in the film Road House.