The decor of Rock Sugar is very upscale Vegas-esque. It is so pretty in there. Even if the food sucked I would still go there just for the ambiance....errrr nevermind, I wouldn't go back if the food sucked. ;P Fortunately, the food is good, and the drinks are even better. This place is a fusion of about 5 different kind of Asian food (Thai, Vietnamese, Indian, Malaysian, Singapore).
Get the Singapore Mapo Tofu. It'll be the best tofu you have ever tried. It does leave a funny numb feeling on your tongue, but don't worry that just the sichuan peppers and is perfectly normal.
I didn't like the Indian stuffed flatbread very much.
They have really good fruity drinks here and also vietnamese coffee (beware: strong!).