Ice milk tea is definitely what I order as much as possible once I am back in HK.
Otherwise I like to go to a steakhouse in TST, I don't know the name tho >_br /> Nathan Road, Kowloon Park there is a police station and a McDonalds opposite. Take a right turn after McDonalds (with the ferries in your back) and halfway on the street on your left side there is a restaurant with nice steak and tomato soup (borsch?).
But I have lots of more favorite places in HK, depends on what food all of you like..