10 The Smart PhoneThe Smart Phone has basically replaced the GPS/Navigation Device, compact camera, MP3 players, and even made a dent in the personal computer industry. But it is only #10 on the list since it is a relatively new technology.
9 The Internet
Billions of users and billions of pages. It's Christmas and the stores seem empty because many people are buying stuff online. But it's still only a couple decades old.
8 The Microwave Oven
Used almost everyday by almost everyone. It's approaching 50 years old, impressive for a "modern" technology.
Has saved 100s of millions of lives. Not bad for an accidental discovery. 70+ years old.
You can travel anywhere in the world in no time at all. Even more amazing is how safe commercial flight is. 100 years old.
Not as fast as airplanes, but available to more people. 130 years old.
Keeps us and our food fresher, enabling us to live in more places. About 100 years old.
3 Electric Light
Allowed us to extend the day in a cleaner fashion. Has been reinvented recently with LED lighting, but its still electric light. 130+ years old.
Electricity is the power behind most other inventions. Where would we be without it?
Flush toilets, clean water. We would literally be dying without this amazing technology as is evident in parts of the world without sanitation.