I've been going to Hanrattys for a couple of years, and it's the best bar in Phoenix. Some people call it a dive bar - I call it your local neighborhood bar. The drinks are cheap and the service is excellent.
Megan, Terri and Mikey are the best bartenders around and they drinks are strong. Parking on the weekend can be tough, but you should be able to find a parking spot. If you're an Ohio State game, stop on in during college football games - they are an Ohio state bar.