While I'm generally not a fan of chain restaurants, I have to admit that P.F. Chang's has saved me a couple of times, usually in work-related situations, where I'm forced to eat dinner with colleagues. If we end up at P.F. Chang's, I know I'll at least get a certifiably vegan meal, with actual spices (as opposed to an iceberg lettuce salad at some bar/grill joint).
Their Mapo tofu is actually pretty good and worth a try. I also enjoyed their Buddha's Feast which has a good variety of vegetables and mushrooms. The food here never feels heavy or gooey, like at most Chinese strip-mall joints.
The lettuce wraps appetizer ($7.95) are tasty as well and consist of diced tofu, water chestnuts and mushrooms in a savory soy-based sauce. Take a pass on the cucumbers side dish ($2.95) which were plain (though I liked the use of delicious black sesame seeds).
Prices are reasonable given the portion sizes and the overall quality of the meal.
I really like that they offer brown rice and also have a gluten-free menu, both of which demonstrate their conscientious spirit.
The service is consistently friendly no matter which outlet you go to (ah, the unwavering quality of chains). Their bar is fairly decent and the restaurants are always good at accommodating large groups. All in all, P.F. Chang's is mostly a winner and a net positive for vegans everywhere.