This apparently is the week for multiple unnecessary sequels, with The Hangover Part III going up against Fast & Furious 6 (twice as uncalled-for) for that all-important teenage dollar.
So I'll give the same "meh" response to H3 as I did to Iron Man 3: better than the second one, not as good as the first.
I heartily endorse the original Hangover as one of the funniest comedies of all time, a film that consistently produces big laughs all the way through and holds up during repeat viewings. H2 upped the ante by moving the setting from Las Vegas to Bangkok but, essentially, telling the same story a second time, with perhaps a third of the laughs.
Now we've got Part III. And yes, I recognize that the Roman numeral is meant as a joke -- but I have to point out that it's about as funny as many of the gags in this uneven and busy film.
Really, it's almost as pointless to write a review of The Hangover Part III as of Fast & Furious 6.
This review continues on my website.