For the record, I don't like it when ANY player taunts an opponent or crowd, or shows disrespect in any form. As a youth football coach I am the one that has to try to stop my 12 year olds from pretending they are wearing a championship belt, or doing a salsa dance after a TD. So don't tell me I think it's fine when Brady or anyone else does it (you know I'm not a Pats fan right?).
My problem with Rex Ryan is that he is too much in the spotlight. He has to be. He can't get through a full season without creating some controversy by being overconfident in his average-at-best team, calling out others teams or players, or just being an arrogant ass. Is he an "idiot" in terms of football knowledge? Of course not. If he could control his ego and need to be in the limelight, he could be a good coach too. But he himself is too much of a distraction to his own team. Reminds me so much of Brian Burke, and why as brilliant as he is at many things in the business of hockey, he will always get in his own way.
As for that last clip, I don't think I've ever seen it before, but I've honestly never seen a coach run into the endzone and celebrate a TD with his players. Seems like a good example of the above.