She's not as proud as she used to be: I remember her best as the no-nonsense director who used pageants to teach about a wide range of subjects (and got lots of other Muppets involved in the lesson, too).
Unfortunately, Prairie Dawn's dramatic talent went to waste after Sesame Street changed format. Nowadays the writers limit her to (1) interviewing characters from children's stories, or (2) vainly trying to protect the letter of the day from Cookie Monster's appetite. If Prairie were a flesh-and-blood child actor I bet she'd threaten to quit after so much typecasting...