What I have learned is the too much protein is not a good thing. It can actually cause premature aging and cell death. And it can even get turned into blood sugar when you have an excess amount of it.
I try and keep it under 20 to 25 grams per sitting and 1 gram per lean Kilo of body mass.
Here is a great collection of information on it. Warning, this is Sciency, but worth the read. I will update this more as we go a long.