Google Maps now has detailed map tiles for the major cities in China.
If you want to have a good look around the stadiums built for the Beijing Olympics 2008 you should visit EarthSwoop's Beijing Olympics collection of 3d buildings. EarthSwoop use the Google Earth Browser plug-in to show 3d buildings built for Google Earth.
I also received an e-mail today from noicon.biz to say that Google Maps in Japan has been updated to show the names of some houses and commercial locations. You can see this change in the screen-shot below where some buildings seem to have been tagged with little red dots.