Most publicized these days is Amazon's Kindle, which I, too, would like to have someday. I heard that blogs can be read with this gadget too.
Portable Sony Playstation (PSP) can also be used, but may require a little bit of conversion.
And for people like me, we use a less-expensive but still nifty Portable Media Player (PMP)
The new prices from now on will be: (for international rates, please use the conversion rate found above)
For each ebook title
$ 0.11 (USA)
€ 0.07 (International)
10.31 yen (Japan)
For each ebook bundle
$ 1.15 (USA)
€ 0.75 (International)
103.12 yen (Japan)