You all should realize now the the Long Now blog has some of the best story starters on the web, especially if you’re into concepts like time. This one is about the different times scales in our body, and what controls them, and what would happen if we could control them.
What would happen if we could slow down our metabolism to barely above hibernation? Could we live for hundreds, thousands of years?
When we got old, could we reverse our reproductive cycle to regress our bodies to their pubescent or even pre-pubescent state, rendering us immortal? Could we reverse this and make infants adults? What sort of cultural consequences would this have on issues such as marriage and sex?
What sort of economic benefits would this reap for the creators? What would religious do in the face of legit immortality?
Go explore young ones, old ones, and transitioning ones.