I was watching the Packer/Giant game, and I have to say, that Brett Favre is a tough and crazy SOB.

He was sacked and his head slammed on the ground. He went to the sideline and it was reported that his "bell was rung." One play later, he runs onto the field on fourth and 5 and throws a TD pass.

He then leaves the game again.

It turns out that he was not cleared by the doctors to come in, he just decided on his own to go in for the fourth down play. It now seems like he probably has a concussion.