We were craving ice cream and decided to try out Shake Shack, which is apparently a big deal on the East Coast. The line was fairly long and they were getting things out really, really slow. At least they are reasonably priced. We got out with a root beer float and a concrete for under $12.
The concrete was the wrong flavor, but with how long the wait and lines are there is no way I'm going to go back and ask for it to be fixed. It was decent, but I think if it had been the flavor I wanted (and like), it would have been much better. The root beer float was disappointing. ~$6 for some root beer and 2 small scoops of ice cream is lame. My girlfriend wasn't too impressed with it either and ended up tossing it out half full. Something she never does.
If they could speed things up and deliver the right order they would be worth visiting as they charge somewhat reasonable prices on a lot of things.