Admit it, you’ve done this: sat around with friends for hours, trying to come up with the definitive list of the funniest movies ever. Well, now here’s an – almost, sort of – statistical solution: the Laugh a Minute rating.It comes from Lovefilm, the London-based video streaming and DVD subscription service. Lovefilm polled its members for the 10 movies that made them laugh most. Then, says spokesperson Helen Cowley, the company convened a panel to watch the movies and note "how many times [each film] made us giggle." Divide the number of laughs by the film’s length in minutes, and...