There are dozens of covers of John & Yoko's Happy X-Mas (War is Over), but not many have something to add to the original. These three versions, however manage to be even more dramatic, bombastic and emotional than the original - that's why I love them.
The Polyphonic Spree - Happy Christmas (War is Over)
The K-Foundation- K.Cera Cera (War Is Over If You Want It)
Antony and George - Happy Christmas (War is Over)