This is another of the films I can actually sit and watch with the family - unlike some of the horror tales that I watch in my office whilst working.
Essentially its a comedy take on the British pirate radio stations of the 1960s, written and directed by Richard Curtis and starring anumber of people you would expect to find in a Richard Curtis - Bill Nighy, Rhys Ifans, Emma Thompson - and one or two others - Philip Seymour Hoffman and Nick Frost.
It's packed full of sixties music, frivolity, a little hearted attitude towards sex (although little is actually shown on screen and lots of overt Britishness counteracted by a token yank (Four Weddings, Notting Hill anyone)
But oddly for a Richard Curtis movie its not a plot heavy as you might expect. This is really a romp, a very fun romp but don't go looking for the meaning you found in his previous films. Just enjoy it.