People in Tokyo start getting ready for Christmas even before Thanksgiving. While Japanese people can't do Christmas trees well, they do lights really well. Check out these views of Roppongi Hills (the lates hyper post-modern shopping mall/hotel/residential area/convention center). I think the pictures I took with my disposable camera are better though.
I also went to see Tokyo Tower today. It's a land mark tower in Tokyo, kinda like the Eifel tower (the Japanese love to copy everything). It's really beautiful at night, especially when you're standing right next to it. The entire structure lights up and you can see it from most places in Tokyo.