For something completely different, head to Randolph Pub. You pay a $5 cover, which gives you all-night access to the pub's vast selection of board games (over 1500 in its library). Then you can spend the evening playing games, drinking microbrews and noshing on nachos, sandwiches and salads. Avoid going on weekends, when the lines are long.
No reservations, and it's age 18 and up.