Just Fun & Games?

A friend sent me this link today. Serious games are a growing part of the video game industry, definitely something worth looking at.
The following is their purpose statement:

The goal of this site is to catalog the growing number of video and
computer
games whose primary purpose is something other than to entertain. These
are
also known as "serious games."
"Game" (i.e. video and computer) has
become a language --i.e. a medium of expression -- in which almost any idea
can
be, and is being, expressed. It is our intention to help document this
growing
phenomenon and list, so that:
People who want to locate Social
Impact Games
can find them, and
People who want to create Social Impact
Games can see
what others have done.