Maulik,
Since we have been remiss at updating the sticky, this would be a good place to do that as well. Please post links to threads you like and we'll collect them all for the sticky.
Here are a few great sites.
www.opentable.com - restaurant reservations
www.yelp.com - restaurant reviews
www.flyertalk.com - 2+2 of travel
http://avsforum.com/ - great forums for advanced audio-video discussion