In Asia, there is a Singapore private firm that specially designed a computer known as easyPC for senior citizens. It is available in English now.
I am one of the developers in this project.

We provide the hardware with the operating system pre-installed, a basic training and phone support.
Many computer shops are only in the business of selling macines, but for us we also want to provide an experience of using PC with no fear.

Features include Internet browser, Email Editor, Writer, Photo Viewer, Multimedia Player, Skype, Msn/yahoo chat and basic games for brain training.

Large font size of at least 13 pts with minimum 19″ LCD monitor. Simple button commands to launch applications.

Hopefully a community can be born out of it to support and learn from one another.

In due time we can see senior citizens together with their family surfing the Internet in fast food joints and sharing of pictures and videos.
Building intergeneration bonding.

The world is pretty much influence through national education. Hope to see a greater awareness for seniors so as to leverage on the benefits of technology.

you can read a recent review by CNET Asia : http://asia.cnet.com/reviews/blog/toekangit/0,39056105,39369740,00.htm

easyPC website is http://www.meeswa.com (Mee Swa is longevity noodles in mandarin)

Cheers,

Ben