We made a trip over to O'Sullivan's in Somerville last night, but this time, I did not get a burger (which they are known for, by the way). Instead, I got their steak and cheese, which was excellent.
Last week, I got their tuna sub, which was also very good, and a few weeks ago, I got their chicken BLT--again, very good.
O'Sullivan's may be all about the burger, and they ARE outstanding, but they have some other worthwhile options on their menu. And, of course, they have all kinds of beer, which is a very good thing.