A great Christmas cover, by a great Scottish band. Give it a listen if you're looking for something nice to sit down and listen to.
2) Tron: Legacy OST - Daft Punk
Can't beat a good soundtrack. They are great music to just have playing in the background. Due to them being designed for movies there is normally a song which will fit any mood. This is just an epic piece of music, and if you have not heard it yet, get it done.
3) Assassins Creed - Brotherhood
I can not stress how brilliant this game is.
If you have every played the first or second one make sure you pick this up. Follows on nicely from the story line from the second, but has built on the game play to a great level. Very much worth buying.