In amongst all the shops and fast-food places, there are a few bars, some more decent than others. The Gold Dust Lounge is as cheesy as it sounds. The seats are covered with red velvet, and at night they have a (bad) pianist playing requests for the middle-aged crowd. If you are desperate for a drink at 10 o'clock in the morning, though, this is the place to come.
Foley's is the obligatory Irish bar with draft Guinness and cider. It serves food in the evening, and if you sit at a table and don't order any, you will be asked to move to the bar. It's a bit of a strange crowd there, depending on the music. It seems to have live music most nights, ranging from cover bands to cowboy music. On a good night, it's a lot of fun.
Lefty O'Douls is a baseball-themed bar, once owned by the aforementioned. It serves basic, cheap food--think school dinners--and drinks. The TV is always tuned to a game. It's certainly not pretentious.
If you fancy something a little more fancy (and expensive), Le Continental is at Post and Taylor streets, down a little alleyway. It's a restaurant/bar, and on a warm day, it's great to sit out in the wicker chairs amongst the greenery and listen to the very chilled-out music in the upstairs bar.