I've just been there. It was nice. However i didn't like the fact most of the hi-fi speakers and amps were just kept there for show and were not playing

. That really sucked. The only sound that was coming was from the car audio systems installed in the cars which actually happened to outside the main hall

.
Anyway i atleast got to touch and feel equipment worth lakhs from major companies and also see some of the finest HD picture available today. The highlight of the show was undoubtedly the Panasonic 103" pdp

(also the most expensive at 34 lakhs!!!

). I also got to play on the PS3 (resistance fall of man). Also tried some Bose headphones and some of the Cowon players and played on some sexy VAIO's (also got to feel Vista for the first time).
Overall i think it was a day well spent, only grouse was with all the speakers off, the 'A' part of 'AV' felt rather silent

.
BTW i've taken a lot of pictures of the Expo with my cell phone and will be uploading it tomorrow (in a new thread mostly).