I picked up the Wal-Mart version today as well and just watched it.
Actually very little of the movie (about 10 or 15 minutes) was in "big screen". Kind of disappointing actually.
Come on over and see it on my 116" screen and 2650 watts of power....it'll knock your socks off and vibrate your intestines.
I look forward to seeing the Blu-ray on a reasonable size screen so I can appreciate the cinematography.