First - I'm a straight guy, and I love this film!
A feel-good film, in all respects, with fantastic songs, half the fun is listening to the actors attempt to sing (Sorry, Pierce, you were a good Bond, but a lousy singer!) But then, the film is about regular people, not singers, and the songs are well-chosen (and in one case slightly re-written) for the film, blink and you'll miss Benny and Bjorn cameos too.
Fellas, sit down with the wife/girlfriend etc and get ready for an enjoyable evening!