The Hangover Part II (2011)

This sequel re-hashes the same basic premise: a group of guys celebrate on a bachelor's night out before waking up the next day so hungover that none of them remember what happened. This time around, they're in Thailand which makes the back-tracking of events a lot more wild and foreign and leads to some darker jokes overall. There's a drug selling monkey, some awkward lady-boy scenes and another kingpin after them as they try to find the Bride's brother who's been 'lost to Bangkok'. The music is sparse and underutilised but does welcome in the key moments such as waking up the morning after. All in all, there's a few laughs here and there and plenty of "what the?" moments but it sacrifices any depth in the story for sheer entertainment value. Could be seen a few times as you channel surf over the years. 
6.5/10