Just discovered Yogurtini in the Pavillions at Talking Stick last week. It's located right next to the new movie theaters and we'll definitely be going back!
They had the most flavors and topping choices I've seen in a self-serve yogurt place, and they were flavors I actually liked! They have several tables (usually this kind of place only has two or three... a pet peeve) and an outdoor eating area, complete with a water bowl and dog treats for your 4-legged friends. They also offer suggestions for mixing various flavors and toppings, which is great for people with no imagination like me!