Someone had asked me about other iPad related forums, here are some other suggestions. Some also include the iPhone and iPod Touch.
http://www.modmyi.com/ - most iPhone related, but there are discussions on the Touch and iPad
http://www.ilounge.com/ - pretty much iEverything
http://reviews.cnet.com/macfixit - MacFixIt, yeah, I know, part of cnet.com, but still decent discussions
http://www.ipadforums.net/ - iPad Forums
http://www.tipb.com/ - A blog site and forums
While not a Forum specifically, these are other places I frequent for iNews and some discussion
http://reviews.cnet.com/iphone-atlas/ - iPhone Atlas, another one bought up by cnet.com
http://www.tuaw.com/ - The Unofficial Apple Weblog
http://engadget.com/ - Engadget - Gadget/technology site
http://gizmodo.com/ - Gizmodo - Gadget/technology site
http://arstechnica.com/ - Ars Technica - Gadget/technology site
There are plenty of others too if you do a search..