Let's be honest...this movie was worth the three dollar rental fee if only to watch California fall off the face of the earth. Any movie that can show me the subsequent elimination of California, Vegas, and almost every politician gets at least sixe stars in my book.
As far as the plot line...well, who actually rented this one for the interesting story? 2012 is stocked full of amazing special effects and about a million edge-of-your-seat moments that make you want to just get to the happy ending already!
For those more detail oriented people that will feel the urge to ask questions (such as, "How is it that everyone speaks American English everywhere on the face of the planet?" or "Just exactly how slow does the largest pyroclastic flow in history take to travel 100 yards?") it may do some good to simply put your brain on pause for this one and look at the pretty apocalypse.