For those folks who are hopeful for good medicine as they age, please consider joining the FReeper Folding@Home distributed computing team.
We download mathematical simulations of proteins and evaluate how they would work inside a cell. It is basic research but very useful to the medical community.
Pop over here for more info:
http://www.freerepublic.com/focus/f-chat/1794738/posts
Simple as a screen saver, powerful as a part of 2 million computers working together to find cures for Alzheimer's, CJD, cancer and diabetes. Its good stuff.