Two links worth checking out (a la Jesse):
Also, completely unrelated, I was thinking: Which would you choose given the following two options:
1. nothing happens
2. time freezes for a billion years, and you are allowed to explore the universe. You can move freely in any direction without getting tired or needing oxygen, heat, food, or anything – but you can only move at a sprinting pace (say a five minute mile pace – i.e. it’d take you 885 years to sprint to the sun, 235million years to reach Proxima Centuri)
And what if we allowed instant teleportation for option two?