It will depend on the teen. Any place where they will make fun of Mom and Dad is usually a hit, like 50's Prime Time Cafe or Whispering Canyon... as long as they understand that they will be picked on, as well. If they are in the sensitive, bashful stage, it may not be a good idea.
I have seen many teenage girls at the Princess breakfasts, complete with tiara, having a blast.
ESPN Club would be a great place for guys.
I think the entire family would enjoy Mitsukoshi Tempanyaki in Epcot.