I have a few.
[ame="http://www.youtube.com/watch?v=nq2ekIMMYXA"]Fun.: We Are Young ft. Janelle MonàƒÂ¡e (Audio) - YouTube[/ame]
This sounds like how I want every night out to feel like.
Most people have mentioned Adele, and she was undoubtedly a massive star this year. For me, my favourite song off 21 was her cover of Lovesong by The Cure.
[ame="http://www.youtube.com/watch?v=5f1D9kHogq0"]Adele - Lovesong (album version) - YouTube[/ame]
Still on Adele, I adored Glee's mashup of Rumour Has it/Someone Like You
[ame="http://www.youtube.com/watch?v=-_uchIyNIvc"]GLEE - Full Performance of "Rumour Has It/Someone Like You" airing TUE 11/15 - YouTube[/ame]
Everything about it - the choreography, the outfits, the singers - perfection.
2011 was more about getting into the greats like Bob Dylan and Led Zeppelin than getting into new or current bands. So, the two songs that have dominated my year have actually been:
[ame="http://www.youtube.com/watch?v=5PEVK66jsEM"]Johnny Cash & Bob Dylan - Girl From The North Country - YouTube[/ame]
and
[ame="http://www.youtube.com/watch?v=jYpydtdlWxA"]Led Zeppelin - Ten Years Gone - YouTube[/ame]
I know they aren't even remotely current but they are my favourites of this year.