Let me correct some of Woeler's points:
4. Humans wouldn't explode in space. Our skin will stretch but ultimately is string enough to contain our bodies so that we will become much bigger, but at least we will remain intact. The issue is survivability, not explosions.
6. The universe right now is expanding at the speed of light. But right after the Big bang, it actually increased in size faster than C. Get your head around that. Also, how black holes behave, if one were to somehow (let's just pretend it does) suck up most of the universe, it will only spit it out again.
U mad, Woeler?