Panda express is about as far away from "authentic" Chinese food as you can get but they have a few items that I just crave.
My favorite meal is Orange chicken, Beijing beef, and chow mein. If I don't have these for a while I really start to crave them. Other than the occasional order of potstickers that's all I like. The rest of the dishes I've tried have been just so-so in my opinion.
If you've seen one of their restaurants you've seen them all.
The things I have always disliked about Panda is they make you ask for soy sauce and napkins and they dole them out very sparingly. Nothing like asking for extra napkins and the guy hands you ONE. Gee thanks