I went on Wednesday on the preview day, not too crowded at all, was able to try out all the new stuff like the 3D tellies from LG, Sony and Panasonic. Gaming certainly seems to benefit from it.
Like Tricky I think the show would have been better with the likes of Apple, MS there, on the whole it seemed like one of the old computer fairs I used to attend, just with some big name stands there.
Had a good few hours though and enjoyed it while I was there, also managed to get a few pics of the Gadget Show team (and Valentino Rossi's MotoGP bike on the Packard Bell stand.. they looked really pleased when i approached, only to be disappointed when I said I was only there for the bike!)