Check out this article published in Boston Magazine about a possible Cheers conspiracy claiming the popular show ripped off a local Boston sitcom starring Steve Sweeney as a Sam Malone-like character: former Red Sox player turned bar owner.
https://www.bostonmagazine.com/arts-entertainment/2018/03/20/cheers-conspiracy-park-st-under/
Also, check out this clip of some Steve Sweeney stand-up performances, including an appearance on Late Night with David Letterman.