Folks here have rightly castigated Donovan McNabb's wilingness to smile.  As we all know, grim faced stoicism is the only way successful quarterbacks have ever played the game.  Here's some evidence.

Exhibit A:

Who the hell does this guy think he is?  He is beaming from ear-to-ear in irrational bliss.  Must be in the process of throwing an interception or choking in a big game.  That's what smiling means, you know.

Exhibit B:

What a clown.  Perhaps if he didn't celebrate in such over the top histrionics, the Broncos would have won a few Super Bowls in the late 90's when they finally had a running game (and balanced offense) to support a mobile, big arm passer with some accuracy problems.

And the clincher:

Two silly little boys who never did a damn thing.  Must be all that smiling.  Idle hands are the devil's playground, fellas!

Now for a real champion:

Note the grim face, the crisp lines of the jaw and the staunchly determined glare.  This guy's a winner.