Chess live action match

Hi mates,
i am back again .....this time i have done a mixture of live and cg. In this shot, i have done 3d tracking in Boujou and then added chess pieces and lighted them in maya....
And down is video clip of it......
u can also watch this video in fullscreen on
http://www.vimeo.com/5056262
pls comment on my work......... cheers