On the surface, the recent Supreme Court decision in Hamdan v. Rumsfeld has sweeping implications (the full opinion can be found here–but the pdf document may take a while to open/download). The frightening (but not surprising) thing is that Alito, Scalia, and Thomas all disagreed with the decision.  Had Roberts participated, and had he sided with the three aforementioned injustices, it would have been a 5-4 ruling–which is as disheartening as it is telling when it comes to the direction the court is heading under the influence of its latest two additions.

Plenty of commentary has already appeared on-line.  For starters, see here, here, here, here, and here.