Diane Chambers is a fictional character portrayed by Shelley Long on the American television show "Cheers" (1982--1987,1993), and on several episodes of the subsequent "Cheers" spin-off "Frasier".
Diane Chambers is a fictional character, portrayed by Shelley Long, of the American television show "Cheers". She appeared as a guest character in the series finale, "One for the Road" (1993), and in four episodes of "Cheers" spin-off, "Frasier".