Here's one of those ye olde personality test thingies:
John Watson
You are John Watson. Let’s be honest, pretty much everyone loves you. Warm, patient and personable, you’re willing to put up with a great deal (possibly too much?) from those you care about and you are intractably loyal. You’re a bit of a thrill seeker and frequently rush headlong into danger, especially if it’s to protect someone important to you. You have a stubborn streak and maybe a possible psychosomatic injury or two, but you’re definitely the person all your friends want on their side in a fight.