Phoenix Theatre consistently puts on excellent productions. As a jaded ex-New Yorker, I was honestly worried about finding "culture" when I moved here. Never fear. Between the theatre here and the touring productions elsewhere in Phx, and the opera, ballet, and symphony (not to mention Spring Training and the beautiful Phoenix Art Museum), I'm not missing out.
Definitely worth subscribing to their season.
And be sure and arrive early, they've renovated the lobby (and added a black box theatre for more intimate shows), with a snack bar (sandwiches a bit overpriced but reasonable pre-show drink prices) and a bar-bar for hanging out.