...offered by the Christopher and Dana Reeve Foundation here for iPhone, iPad, Blackberry and Android.
Check out everything from accessories to productivity (i.e. voice controlled apps) to games to travel and assistive technology and health and fitness and news and more. I found a few that I didn't know about over there to use on my iPod Touch.
Christina Symanski, a quadriplegic, also has several videos up about how she uses her iPad and the apps that help her do things independently.