Same again in 'The Hangover Part II'

When crafting a follow-up to the highest-grossing R-rated comedy of all time, it's understandable that one might be reticent to mess with a winning formula.

But director Todd Phillips and writers Craig Mazin and Scot Armstrong seem to have confused revisiting with recycling: 'The Hangover Part II' so closely mirrors its blockbuster predecessor in every vital aspect that it can scarcely claim the right to call itself a sequel.