When I worked for WYNY/New York in 1985-86, the biggest star on the radio station wasn't me or my morning show partner, nor the guys who did middays and afternoons. WYNY's most well-known personality was a petite sex therapist with a German accent named Dr. Ruth Westheimer, who started with a 15-minute weekly show (on an adult contemporary music station!) and worked her way up to national syndication.
Our paths didn't cross very often -- I was on in morning drive and her show aired at night -- but when I ran into her in the office once a month or so, she was always gracious and happy, which is why the entire staff loved her. I'm happy to say that Dr. Ruth is still around, and still dispensing valuable sexual advice. Here's an interview with her.