I could name many more but a teen heart-throb from the past that set the girls screaming was Bobby Curtola. My wife and I had the pleasure of meeting and talking with him years later in Las Vegas. I found him to be friendly and gratious and he sang Fortune Teller for my wife on our annivesary. On his break he joined us at our table and it is a treasured memory!
Denny Doherty is another great one that comes to mind!