The Kindle has impacted my life more than any other device in the past year simply because it's drastically increased the amount that I read.
I'm buying more books because I can literally execute one click and it's added to my Amazon account. I used to read only in the morning or night, but now I always have it with me
and I read while I'm waiting on line, going through security, boarding a plane, any number of things. That's pretty darn neat.