21 Jump Street (2012)
Never saw the original TV series as it wasn't really on UK TV much as I recall so I'm unable to really comment on comparisons, but after reading up it does seem like this comedy is relatively close to the source material.
Basically some young looking dudes are put into a local high school to crack down on a drugs ring, the reason they are used for the case? they are young looking, pretty much the same deal as the TV show. Of course this film is akin to older films 'The Dukes of Hazzard' and 'Starsky n Hutch' in the sense that it mocks the original source and teen/cop flicks in general.
So in a spoof type way this is quite good, I found myself enjoying the typical piss taking humour as the two leads start off in high school themselves and move up into the police force together. You know what kind of gags and visual stunts to expect, a blend of 'American Pie' and 'Paul Blart: Mall Cop' with a hint of 'Naked Gun'...and it works just fine.
For me the film started to wane from around the midway point though as the guys get emotionally attached to people they meet in the school (very predictably) and things start to get a bit mushy. You know whats gonna happen in the end, its very formulaic and cliched but it does put a smile on your face for sure. I've heard a sequel is planned but I really don't think that is necessary as this barely keeps its head above water if we are honest. I did like the two cameos in the finale though, nice touch.