Here is a list of links to reviews of Shanghai Knights. There are MAJOR SPOILERS in these reviews! Thanks to Marie M. For providing all these links.
Video interview ( short )of Jackie, Owen and Fann Wong and some premiere footage :
also, in this URL are more reviews :
http://entertainment.msn.com/Movies/Movie.aspx?m=531205

TONS of reviews are pouring in - spoilers in the links to the reviews below :

"Movie Mom" gives SK a "B-" review :
http://movies.yahoo.com/shop?d=hv&id=1807776039&cf=parentsguide

Roger Ebert gives SK 3 stars !
http://www.suntimes.com/output/ebert1/wkp-news-shanghai07f.html
My own Tulsa World newspaper gives SK 3 out of 4 stars.
http://www.tulsaworld.com/MovieReviewsStory.asp?ID=030207_Mo_sp5_rev2
Yahoo Movies "User Rating" [ from non-journalists who have seen SK ] is 4.75 stars out of 5 !
http://movies.yahoo.com/shop?d=hv&id=1807776039&cf=info
Click here to see yahoo reviews

Yahoo Movies gives SK an overall average critic's reviews rating of "B-":
http://movies.yahoo.com/shop?d=hv&id=1807776039&cf=critic
51 reviews are now up at Rotten Tomatoes... ( Ebert and Roeper have not reviewed it yet - they will this Sat. )
http://www.rottentomatoes.com/m/ShanghaiKnights-1120269/reviews.php?critic=all
...and so far is getting a "Fresh" rating of 64% - 60% or higher is considered "Fresh"(good )
http://www.rottentomatoes.com/m/ShanghaiKnights-1120269/reviews.php


Another 3 out of 5 stars review - not listed in the Yahoo or Rotten Tomatoes sites
http://www.nwlink.com/~gareth/sknights.htm