I had my birthday party here in the fall, and it was easily one of the most fun nights I've had in Boston. I had originally planned on having my party elsewhere, but every other bar in the square was not accommodating for some reason.
The manager at TD's was great though--they definitely have experience hosting private parties, and basically took care of everything for me. It was exactly what I wanted, and required no work on my part.
All of my friends had a great time too--I guess everyone likes an open bar. But really, many people since have told me what a great time they had, and a few of my friends have had their party their since, and felt likewise.
Tommy's is also a great place to just go on thursday for a few drinks with friends. there is usually a good amount of people, and it's casual. definitely my favorite spot in the square.
Pros: reasonable prices, good crowd
more