Church Brew Works is one of the reasons I moved to Pittsburgh! Well, not completely true, but it is one of the cool things about Pittsburgh for sure. Church is turning out to be a regular go-to place on Saturday or Sunday afternoons for me, with my wife and/or friends. That time of the day on the weekend it is usually pretty quiet (serene?). It can get extremely busy in the evenings, though. The beers are great, the food is better than you would expect (and in its own right very good), and service is usually good too. I'd say on the food front the pizzas are the best. And stick to the basics (e.g., pepperoni). I've tried their bison burger once and wasn't a fan, though kudos to the kitchen for putting out a medium rare burger that was actually medium rare (I find at a lot of places in Pittsburgh that if you order medium rare you get medium instead).
Go to Church. Enjoy. Repeat.