There is an interesting article on MSN written by somenone named Paul Boutin. It's called "10 Life-Changing Technologies".
"So many new technologies have appeared in the past half century that it’s impossible to list them all. But these 10 high-tech breakthroughs stand out over the last 50 years because they’ve revolutionized the way Americans live. We look back at their beginnings, as well as where they’ve taken us today."
In case you are too lazy to read the article yourself, here's the synopsis:
10. Organ transplants.
9. Robots and artificial intelligence.
8. Electronic funds transfer.
7. Nuclear power.
6. Mobile phones.
5. Space flight.
4. Personal computers.
3. Digital media.
2. Genetic engineering.
1. The Internet.
Just some food for thought.