I've always been partial to Marcia Cross, who played Rebecca's sister, Susan.

http://cdn4.quizly.co/wp-content/uploads/2017/08/30031528/Can-You-Name-These-Cheers-Guest-Stars-FB.jpg

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTnac5BdoeHwAfufZB8vI_K3zkOw69hkAQm5fHvWp67KgORTX1X

Marcia had the most incredible legs that I've ever seen on a woman:
https://www.iamtonyang.com/1001/cheers12.jpg

I also thought that Jane Sibbett was really lovely in the episode (http://www.dailymotion.com/video/x5driim) that she guest starred in:
jIxf0WhR5sE

Please Use pornh.. if you wanna get off. dont use cheers for that.