I've never even noticed this thread before.
I saw Cowboys and Aliens and The Inbetweeners Movie at the weekend.
Cowboys and Aliens is a fairly standard summer blockbuster. Craig, Ford and Wilde don't make for the most charismatic of stars mainly because humour is few and far between in the film. The special effects are very good with the exception of the actual aliens, who can never seem to be pulled off properly with CGI.
Overall there's just nothing really special that makes the film stand out, it's an OK watch but probably more worthy of a DVD rental than a cinema trip.
The Inbetweeners movie is very funny, i'd say it was only behind Bridesmaids for the number of laughs per minute you'll get from a film this year and it's better than other comedies like The Hangover 2, Bad Teacher, Horrible Bosses etc...
If you're a fan of the show (which i am) then i don't see any reason why you wouldn't like the film, the characters are all still essentially the same although they show some progression and maturity in their actions by the end. There's several great comedy set pieces including a 'pulling' dance in a nightclub that lets us see simon and Will's attempts at dancing, Neil steals the show obviously.
There are a few lulls in the comedy though at some points and Jay doesn't get to over exaggerate as much as he does in the show but it's well worth going to see at the cinema.