The guy in the video is a HK based Australian actor called Greg Rivers aka Ho Kwok Wing who has played numerous roles in TVB dramas and HK theatre productions over the years.
Ho Kwok Wing's homepage is here.
Reminds me of a Chinese TV clip I saw once which was set in a hospital ward: A Western doctor walks in (I don't think it was Ho Kwok Wing). The scriptwriters must have had trouble coming up with an authentic-sounding Western name because the Chinese character turns to him and says, "Hello Doctor Beckham." :)