Tezuka Osamu Magazine Club and Soba Project, 400 volumes of Osamu Tezuka Manga (that's about 80,000 pages) are now available to read on the Apple iPad.
An subscription fee of 1,050 yen
($13 US) per month will grant users unlimited access to all the available manga in the e-library. There is also a free edition of the latest Weekly Tezuka Osamu Magazine featuring 100 pages selected from Tezuka's various works. Most interesting is a motion manga feature, where the comic pages have been enhanced with animation and voice acting.
Thus far, this is only available in Japanese, though I suspect international versions may follow at some point in the future.
You can read more information on TezukaOsamu.net as well as Mania.com and Asahi.