Kelly's, on Revere Beach, is your basic boardwalk kind of place, though it's not really on the Boardwalk.  The namesake roast beef sandwich is medium rare, juicy, and should be ordered with the killer hot horse radish.

I was there because someone told me Kelly's serves a great lobster roll.  Thing is they put celery in their lobster roll and that's sort of a taboo, because a lot of places use celery as a filler.  The other thing is, though, that it's still a great lobster roll - packed with lobster.  

Also had to try a chili dog.  Glad I did.  Good dog, butter toasted bun, and good chili