It blew everyone away at the Sundanace Film festival this year, with it being likened to the Ealing comedies of old. The story surrounds 5 would be terrorists on their trials and tribulations all delivered with deadpan comedy style.

http://www.picturehouses.co.uk/cinema/Picturehouse_At_Fact/film/Four_Lions/

If you liked Brass Eye then you will like this.