Went to O'Sullivan's in Somerville again last night. They may be known for their burgers, but they have a lot of other good items on the menu. I had a chicken BLT rollup last night that was terrific, and a couple of weeks ago, I had the steak and cheese, which is nearly as good as the burgers.
I've been noticing that they have been getting more and more crowded of late. The word is definitely out about this place.