Well, I've only watched the movie itself about 5 or 6 times so far!
The extras are great!
My favorite is an interview with Stephen Chow conducted by Ric Meyers - in English. Stephen has an interpreter nearby
but he only uses them once or twice during the interview. Stephen is very funny and charming and his English is very good.
I wish I could learn Cantonese as well as he knows English!
There's a "making of" documentary that apparently was aired on Hong Kong TV with hosts Lam Tze-Chung and Chan Kwok-Kwan
from the movie. It also includes the usual deleted scenes and outtakes.
The commentary is really good as well. Stephen Chow, and co-stars Tin Kai-Man, Lam Tze-Chung, and Chan Kwok-Kwan provide
the subtitled commentary. Some reviewers have said that they were disappointed that the subtitles didn't tell you who was
talking and I can see where that would be a problem. It wasn't for me though, since I have seen these guys in various movies
enough to know their voices. You can tell by the commentary that these guys have fun together and don't take everything too
seriously.