Just wanna chime in and just repeat what most fans have already known for several months now (hey, I don't buy floppies anymore so I'm always late): The Sinestro Corps War is damn bloody awesome! Lots of punching, kicking, zapping and not really introducing anything new by the story's end. Oh sure, there's all that new spectrum of Lanterns, but really, what the fans wanted was the illusion of change and this storyline delivered.
I particularly like this one scene when Guy Gardner is infected by a microscopic member of the Sinestro Corp called Despotellis. This parasitic bastard doesn't need a ring to kill you. It just swims in your bloodstream for a few hours and you'll melt from the inside. Nice.
So how do you fight a virus?
By siccing a super-intelligent smallpox virus bent on revenge on it, that's how!