Dr. Tenma from Monster.

He's brilliant and kind and probably the most detailed and human character I've ever seen in an anime. He's strong willed and brave and compassionate, but he still has plenty of weaknesses and flaws that make him seem very real. He's a bit too naive and trusting, and is something of a doormat too. He shakes when he gets scared (which is often.) He's got a one track mind and is a real workaholic. He can cry his eyes out for people he hardly knows. He blames himself for things that aren't his fault. He doesn't get enough sleep and doesn't eat properly either, and pushes himself so hard that he often collapses or makes himself physically sick. He doesn't really fit in any where, but still honestly loves people and values human life above everything else.
He likes black coffee, thinks everything tastes better with soy sauce and can play the guitar. And his favorite song is Al Green's 'Let's Stay Together.' How cute is that?