Grindhouse was one of the best times that I've ever had in a theater that I can remember.
I hope that they actually release it on DVD as it was shown theatrically (with the few seconds of excised gore/footage for the MPAA restored) and then split them up with the extended editions with the commentary tracks and the such.
Or, make a 4 disc set. On disc one have the movie as shown theatrically, discs 2 & 3 could be the extended cuts of Planet Terror and Death Proof with commentary tracks and the like, and then disc 4 could have all of the making of stuff on it. I'd buy that!