What do you think is the best technological innovation in the past decade?

I need to write and essay to get into a class over the summer. The prompt is: What do you believe is the best technological innovation in the past decade? Write about its benefits and challenges and how the challenges could be overcame to increase the benefits of mankind. I have some ideas but this is a really tough prompt for me. Which of my ideas are the best or do you have any better ideas?
-Wi-fi,
-Wii Fit and other Health and fitness influencing programs,
-iPhones and Blackberries,
-Navigator’s for cars

Well if the list you gave is the greatest technological advancements we’ve had in the last decade, we as a civilization are royally screwed.

I would say the implement of Ethanol as a major use for a oil alternative. It was started in the 60’s but in the 90’s new technology put it into plants and begun on the path to getting all country’s off of oil and onto a more sustainable and healthier alternative fuel.

LIVESTRONG Application for Blackberry – CTIA 2009