There are episodes of “Cheers” airing 10 times today across the various channels that come into my TV (including Reelz Channel, which is supposedly about movies but has to fill much of its programming day with infomercials and episodes of “Becker,” “Ally McBeal,” and “Third Rock From The Sun” — the only thing worth watching on Reelz is Leonard Maltin’s weekly movie review show). I don’t know of any other show that airs that often every weekday across so many channels, but then most shows didn’t last 11 years, as “Cheers” did.

Michael Schur, who was a writer for “The Office” and co-creator of “Parks and Recreation,” thinks “Cheers” is the greatest sitcom of all-time, and makes a pretty good case in this piece.