Because in 2012 his GQ cover was revealed, and he looked spectacular...
...and also like a rock star.
In 2012 he took this soothing photo with a plant:
And a gaggle of Korean Pop Stars fell in love with him.
In 2012, he crashed a local game of kickball...
In 2012 he went golfing wearing his "Caddyshack" costume
He also wore this outfit while golfing...
In 2012 he brought a tiny camera with him to a movie premiere...
...wore this outfit while posing like this:
In 2012 he ate popcorn...
Then he thought deep thoughts while eating that popcorn.
In 2012 he made the best entrance to a late night talk show ever:
And he went to a basketball game with mutton chops.
In 2012 he played with a mini marshmallow man
In 2012 he threw the first pitch at a cubs game...
Basically, 2012 was a great year for Bill Murray.
BECAUSE HE'S BILL FUCKING MURRAY!