Also Zombieland >> Avatar. Every item in that movie, down to the individual details, was done right and done 100%. Whoever conceptualised that movie should have a parade held in his honor and be showered with free meals at fancy restaurants for a month.
Edit: I laugh at you people who jokingly snag me for the Z/S substitution and miss the "should have / should . . . be" issue that I just noticed and corrected. You fail at grammar. =D
Also, James, please don't use my comment box to be an idiot. Even I know when not to open my mouth about things.