From your comments it sounds like you haven't been to HK before - if that's true you have to go into the city. The airport is cool - but the city of HK rules! I'm still pissed I didn't go there in my 20's - might have stayed.

As the others pointed out the Express lives up to it's name (fast) and drops you right in the heart of the Hong Kong island or takes you over to Kowloon. From Central it's not that far to the Victoria Peak tram - there are a number of decent restaurants up there and you would have a great view of the lights coming on on the skyscrapers. On Lockhart St. is a great Mexican restaurant called Coyote. Or you could take the subway to the Causeway Bay exit, come up to ground eat, shop, then walk around Victoria Park.