Happy birthday to Brandon Flowers of the Killers, who turns 31 today. We're not sure how Flowers plans to celebrate his big day -- which he'll have a little extra time to do, as today is the longest day of the year -- but one way we are marking the day is by getting to the bottom of the age-old question: which is the most killer of Killers tracks.

It won't be much longer until we hear new music from the Killers -- a fall 2012 release has been promised for their next album, 'Battle Born' -- but in the meantime, let's take a look at what the Vegas rockers have given us so far. With singles from three Killers albums (2004's 'Hot Fuss,' 2006's 'Sam's Town,' 2008's 'Day & Age') and several charity singles to their credit, Brandon Flowers and the boys have a bunch of killer tunes to choose from. But you can only choose one, so which will it be?

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