According to Amazon, the Kindle is its worldwide bestselling product of all time. You can read about it here. But I know for a fact that it has to be true because my sister got a Kindle for Christmas.
When it comes to books, I've been digesting far more than either of my sisters for a long, long time. Not that they don't read, but I am far more obsessed with words--and in particular with fiction, probably because I believe there is a lot of truth in fiction despite all the disclaimers at the beginning of every book. :^)
I also rarely watch TV. However, both of my sisters have large, flat screen televisions with cable hookups.
I own a Nook, an eBookwise and I read books on my cellphone. But I own plenty of paper books as well and I have a very hard time parting with any of them.
My sister with the Kindle has always been up on the latest fad. She was the first one in our family to buy a microwave oven back when microwave ovens were massive machines. My sister always informs me about the fashion color of the year, the pet of the year, the accessory of the year, or the hairstyle of the year. If my sister owns a Kindle that officially makes it the gadget of the year.
Those of you who don't own a Kindle (or some other ebook reader) are behind the times.