I read 20,000 Leagues many years ago, and it was a truly great book. Jules Verne and HG Wells really set the stage for the best of the science fiction to follow. The Time Machine, for example, was really something amazing to read. It takes you literally millions of years into Earth's future (far beyond the movie adaptations). Really incredible stuff for a guy who lived in a time when the internal combustion engine was the cutting edge of technology.
The Rev