Looks really good, love the colours, love the nav, the fade in of the sites is awsome, (what script did you use?).
My only 2 negatives are I would have made the thumb nails a little smaller, just so you can spread them out and maybe fit a few more on the page and the other negative is there's just way too many css galleries about at the moment and they all follow the same format, I would prefer you did something a little more like...
Design Meltdown
Just my opinion, love the design though