So, I thought I'de be my first poll taker :-)
It's only fair that I give my own two cents.
I am thinking mostly the first choice of quiet tough army doc. One image that comes to mind, if any of you have watched it, is that scene from Grey's Anatomy where Owen, the new guy (well, he was new at the time) treats Christina and her icicle.
I especially love the look he gives her before he pulls it out and her physical reaction when he does(starting at 05:03). there are some other good scenes there too.
I can also think of several M.A.S.H. scenes where Hawkeye (Alan Alda) was taking control and doing it very precisely and assertively, oh... and with humor.
Anyway, I think that this kind of doctor is the best, especially since a wuss like me would not get anything done, unless there is this kind of a person in charge ::)
Well, hope to read your thoughts soon.