I love the official jquery docs website, and always refer to it whenever i am stuck with a method or cant remember an awesome functions name :p .As i have a slow internet connection , i was recently searching for an offline version of the awesome Official jQuery documentation but couldnt find one. I asked John Resig about it and he was kind enough to point me to the right direction and told me about the jQuery API browser which can also be downloaded to your system for free from here :
http://api.jquery.com/update/jquery-api-browser-2.0.air
The jQuery API browser will only work if you have Adobe AIR installed on your system. It makes a great source for offline reference when you are developing and dont have an internet connection.
http://api.jquery.com/update/jquery-api-browser-2.0.air