When you walk through the door at Mullen's, the last in line on the long row of Madison Avenue bars and pubs, it's almost as if you're looking down a long hallway. Mullen's is a comfortable neighborhood pub with free pool on Tuesdays and a ski ball machine. There's a patio out back for when the unpredictable Ohio weather isn't a problem and, once in a while, the Pop Art gallery next door has its after-party here. At night, the crowd is generally on the young side, but all are welcome.