Soon after longtime Portland actress Gretchen Corbett learned she would play the notorious Nurse Ratched in Portland Center Stage’s upcoming version of One Flew Over the Cuckoo’s Nest, she began to worry. Not about the role, really. During her long career she’s played everything from Beth Davenport (Jim Rockford’s lawyer and occasional love interest) in The Rockford Files to Joan of Arc in the New York Shakespeare Festival. It was friends’ reactions that disturbed her. Sh...