For a nice, calm evening out, Ryan's Daughter is the perfect bar. It's almost never packed, and the crowd is a mix of ages, usually more towards 30s. There is no pretention, you can play pool in the back, or rent darts for a refundable $10 deposit.
The bartender is really nice - I had a ginger ale, was halfway through, looked away, and it was full, or he gave me a new one, I don't know, but wow! Free bags of potato chips are strewn throughout the bar if you're hungry. (Plain and barbeque.)
NOT the place to go if you're looking for a pick-up scene, this is really low-key, come with a friend or two, and just relax.