I haven't seen the younger Bush in person yet. Have seen all the other presidents since Kennedy in person. Only two I've met, or at least shaken hands with are Bush the elder and Jimmy Carter. I saw Clinton and Gore together so later hoped I'd seen two presidents at once but thanks to Florida that wasn't the case. Also hoped I'd shaken hands with a future president when I met Robert Kennedy but again that was another case that didn't turn out the way I'd hoped.