Deanster, there are beers that need to be served warmer to bring out their flavors better (such as 60ish F), like Barley Wines, Abt, Imperial Stouts, etc. Cask conditioned pints are generally served around 55ish.
Now, if you tend to like stuff colder than normal, drinking a Barley Wine at around 50F or so would still be pretty good, but the taste changes greatly (and becomes much worse) when you get colder than that.