On the Cheers episode Any Friend Of Diane's I noticed that actress Julia Duffy guest starred as a character named Rebecca who seemed to be a friend of Diane Chambers. And when I saw the name Julia Duffy it makes me wonder if Julia Duffy is actor Patrick Duffy's wife? Did Julia Duffy also appear in other episodes of Cheers during it's run?
Bestie

Her name is Julia Duffy and she's not married to Patrick Duffy. That was the only episode of Cheers that she appeared in.

Oh I thought her name was Linda Duffy but I know now that her name is Julia. Julia Duffy was so wonderful in the Cheers episode and really funny
Thank you very much for correcting me
Bestie

Julia auditioned for the Diane role and was brought on for the guest spot. The same thing happened with Fred Dryer, who auditioned for Sam.

On the Cheers episode Any Friend Of Diane's I noticed that actress Julia Duffy guest starred as a character named Rebecca who seemed to be a friend of Diane Chambers. And when I saw the name Julia Duffy it makes me wonder if Julia Duffy is actor Patrick Duffy's wife? Did Julia Duffy also appear in other episodes of Cheers during it's run?
Bestie

Nobody feel sorry for Julia Duffy, she had a long run as Stephanie the rich, spoiled maid on Newhart, another great 80's sitcom.

I like BOTH Shelly Long & Julia Duffy
and the casting people know that too