Hit up the Sheck-O Thai/Chinese restaurant if you can - open air place with great food! Do the Dragonsback hike and pick up a cab/bus to Sheck-O if you're into hiking.
San Miguel pairs nicely with Thom Yum Gai soup, pineapple fried rice, and shrimp with black bean sauce.
The Lan Kwai Fung district is a collection of bars/night life.
Damnit, now I want to go to Hong Kong again.