Bush's selection of John Roberts for the Supreme Court should not be a surprise. In the use of his power, Bush really only cares about two things: his cronies and his favorite corporations. John Roberts represents both of those, in abundance, having been a loyal Republican apparatchik and corporate lawyer for his whole career.
Ok, Bush also cares about a third thing, if only out of necessity: not pissing off the fundamentalist crowd too much. That ruled out Alberto Gonzales for now. I suspect he'll get another chance though.
As could be expected, Bush's nominee's history gives every indication that he will be a protector of Big Money and Big (secret) Government at the expense of the average citizen of this country. I hope to hear differently during the confirmation hearings. But I don't expect to.