If you're looking for anything in old school style, Shamus is your man. I wouldn't see anyone else in the city for old school work. I gave him one of the most insane ideas for a tattoo imaginable (you wouldn't even believe me if I told you) and he drew it out for me. It was perfect. He is kind, courteous and damn funny, and plays awesome music while tattooing.
Don't take my word for it though. Go to the shop and look through any artist's portfolio (which is what you should be doing when looking for a new tattoo artist anyway) and see for yourself. I severely doubt you'll regret any tattoo done by him.