No Christmas would be complete without a viewing of The Ref, alongside our other fave, National Lampoon's Christmas Vacation. It features the wonderfully matched sniping of Kevin Spacey and Judy Davis as the couple on the rocks who ultimately learn to come together with the aid of the put-upon criminal ( a wonderful Denis Leary ) who is by far the sanest of the lot. Set this in the weirdly Disneyesque beauty of Niagara-on-the-Lake at Christmas ( yes it really looks like that ), throw in one of the best rants ever delivered in a movie, and you have a near perfect sugar-free Christmas classic. Careful though, it is addictive.