Today's decision with the most interesting lineup is undoubtedly United States v. Gonzales-Lopez. In this case, the court held, 5-4, that if a trial court erroneously deprives a criminal defendant of his choice of defense counsel, the defendant is entitled to a reversal of his conviction under the Sixth Amendment. Justice Scalia wrote the majority, for himself and Justices Stevens, Souter, Ginsburg, and Breyer. Justice Alito dissented, writing for himself, the Chief Justice, and Justices Kennedy and Thomas. The opinions are here.