I do. And ever since I became interested in Myers-Briggs typology, I've tried typing the show's characters. I realize it's not really possible to type a fictional character, because, you know. They're not REAL. But it's still fun to try. I've typed some of the characters on M*A*S*H, based on the traits they display, but I'm not sure about others. Here are my closest guesses.
Hawkeye - ENFJ. Hawkeye seems to me to be a textbook ENFJ. He's charismatic, enthusiastic, compassionate, idealistic, and can make friends with practically anybody. I've seen some people type him as an ENFP, but then there's that strain of atruism in him. He can often be completely unreasonable in his need to right every wrong and fix things that just can't be fixed.
Trapper - ESTP. Pretty sure about this. He's a people person, a party animal, and a risk taker. He's definitely charming, but he has no regard for rules, and lives in the moment. He's also easily bored, and can sometimes be shallow, which can be a trait in some unhealthy ESTPs.
Klinger - ESFP. Klinger is such an ESFP. He doesn't care what other people think of him; he just does whatever the hell he wants. He's fun, friendly, helpful, outgoing, and never ever boring. But he's not especially deep. I wouldn't say he's stupid; he definitely gets things done, and is trustworthy and reliable. He's just... uncomplicated.
Mulcahy - INFP. This is kind of a no-brainer. Mulcahy's an eternal optimist, always trying to find the good in everyone. He's kind and helpful, but unobtrusive in his kindness, preferring to let others come to him for help when they're ready to accept it. He strives for peace, and is happy to be useful. He also has a tendency to be way too hard on himself and feel that he's failed when he can't get through to people.
Charles - ISTJ. He's intelligent, practical, strong-willed, not good at expressing emotions, and a total perfectionist. For a while I thought Charles might be an INTJ, because I'm one, and I've always identified with him. But he's so damned stubborn, and not open to any ideas which differ from his own. And he strongly values tradition and established order, and is wary of anything that challenges that order.
I'm not sure about B.J., Margaret, Radar, Blake, or Potter. With Margaret, I'm leaning toward ESFJ. And I have no idea what Frank is. Other than horrible.
Anyone else have any theories, or disagree with any of mine? I won't mind; I welcome fresh perspectives!