I watched the film on opening day. I'm gonna make this brief:
Planet Terror is a man's film. So much so that women should not be allowed to see it. All the explosions, guns, women, explosions, explosions, ammo, swearing, explosions, explosions, explosions, fighting, and blood and gore are all topped by one thing: the perfect BBQ recipe. In fact I think it's the only thing in the movie that didn't witness an explosion.
Death Proof was boring as hell but once it had some action it was quality on film. The car chase scene had me gripping my hands in tension, and the ending got an applause from the entire audience.
Even shorter: watch Grindhouse.