[Suicide Junkie]

Even if you can't go FTL, you could still colonize the entire galaxy in less than 10 million years from here.

IIRC, the assumptions were along the lines of:
- Travel at 10% of light speed
- 100 years per colony ship launched
- 500 years after landing for a colony to industrialize and send out its first colony ship.
- Goal of sending a colony ship to every star in the milky way.