I was in San Francisco today for a training class (I normally work in Oakland). During the lunch break, I took a little walk and was very pleasantly surprised to see a street musician on Market St. playing Mountain Goats songs.
Here is some video I took.
I'm sure he played other material, but he played two tMG songs before I even spoke to him, then he played a few more at my request. He says he has around 48 tMG songs in his repertoire.