There are a million and one dim sum places in Hong Kong, but in TST give "Yan Toh Heen" a go. You'll find it in the InterContinental on Salisbury Road.
http://hongkong-ic.intercontinental.com/dining/yan_toh_heen.php about 8 years ago
It is a good restaurant in HK. You can see the location in web.
http://www.maxims.com.hk/en/main.asp?t=13145438238266378 about 8 years ago