Ding Tai Fung is a solid spot for siu long bao and choi pong hai. I don't like their soup noodle with the peanutty sesame sauce (not quite flavourful enough) but their rice bowl with marinated fatty meat and rice is serviceable.
In the far corner you can see staff constantly working away making more and more dumplings! Their potstockers are OK but I find the skin a bit thick, there are definitely better places for that. If you're a banana Chinese person like me and can't read Chinese, either ask for a menu and reference the # to get what you want or ask for an english version of their ordering sheet.
One cool thing about this restaurant unlike most other Chinese restaurants of this type is that they offer hot & cold HK Milk Tea and Coffee as drink options along with soy milk.