Nico Nico Douga (ニコニコ動画) is possibly one of the greatest Japanese sites on the internets at the minute. The name literally means smiling video or something of that ilk.

There are 1.5 million videos on the site and around 6.5 million members. Most impressive.

The funniest one doing the rounds so far is the Ronald McDonald 'meme'.

http://www.nicovideo.jp/watch/sm2057168

http://www.youtube.com/watch?v=Nhizo7KrZrw&feature=related
http://www.youtube.com/watch?v=-43qYNJjaPE
http://www.youtube.com/watch?v=OVcewUPbROU&feature=related

This is a spliced advert from a McDonalds ad in Japan. Yes, clowns are still selling burgers in Japan. The comments on the screen, are actually members comments which scroll along. Its a unique feature for the website and allows a bit of interactivity with the video. So of them like the above, can get very schizophrenic at times.

The second one was a mix between the anime Lucky☆Star and of course the creepy advert. It was taken off Nico originally, but is now on youtube for all to see.