"Perfection is that which is Godly"
"God is that which is Perfect"
In a vacuum, I don't have any problem with either of those claims; I just have a problem with using them to prove the existence of God. Otherwise, what we determine as perfect is subjective, and the claim that existence is a necessary component of perfection isn't necessarily true.
Another thought on the Teleological argument, which I think Vlach mentions - it assumes that the world is so complex that it must have been created and designed. God, in creating the universe, must also be complex. By the same argument, then, God must also be created. and whatever created God must have been created, etc.