Postino has one of the best happy hours I've ever been to!
I wish I lived in the area so I could go back. The vibe is just mellow and coooool (with my hand flat, slowly motioning from right to left). We had a long wait for a flight and thought we would stop by for their 11-7 happy hour. They had a nice selection of $5 wines and pitchers of premium beers. For $5 you really can't go wrong, but despite the low price the quality of everything I had was fantastic.
You must also try their bruschetta. We tried a selection of them and they were all amazing. My favorite was the goat cheese with roasted peppers. The service was great throughout, especially since we took up a prime table for about 4 hours. Our goal was to taste everything and we almost did it before our flight!
Just another reason why Phoenix is a pretty cool city. Just as San Diego should stay classy, Phoenix should stay coooool!