Back in college, there was this freshman who was rushing my fraternity who we had nicknamed Pukey Mike. Pukey Mike seemed like a decent guy when he wasn't drinking but you give a beer to him and he just couldn't handle it. Pukey Mike never got into my fraternity and ended up heading off to some other fraternity where he made sure their hallways reaked of vomited beer and cheap pizza.
Donovan McNabb reminds me a lot of Pukey Mike. Decent guy most of the time but he melts under the spotlight. You've probably seen this clip else where, but kudos to the Eagles Fanhouse blogger for bringing it to light.