I agree with you. Think of Tarantino's plot in Kill Bill as a series of Ripley's Believe It or Not pieces. What about the recovery from the coma? The recovery of mobility in the Pussy Wagon? That sequence is quite similar to the escape from the grave. As for getting through the dirt, I'm not so sure that's physically impossible. Where there's a will there's a way, and this is no ordinary lady. But if you want plausibility you better go to another movie.

What do you know about shotgun blasts of rock salt, though? Is this a device actually used somewhere?

Is there a physician in the house?