This advert features BoA who is actually Korean. She is popular both in Korea and Japan and can sing in Japanese, Korean and English. Recently she has had a bit of an image change away from the cute (like in this ad) to a more mature and beautiful look. Some might say not an entirely successful image change though.
This is from last winter (Christmas day in fact!) and is for Kirin (hot) Green Tea. Matsushima Nanako (松嶋菜々子) is a hugely popular actress for advertisements. Recently pushed off the number one spot for CMs by Ueto Aya but still can command around 10 million yen per advertisement! 
Ueto Aya (上戸彩) is the current queen of CMs in Japan, and it is not hard to see why. Here she appears in a really cute panda suit for Dr. Japan Insurance.
This advert features Kato Ai (加藤あい) and is for Mitsubishi Real TV.
Ok, here’s the first CM. It is in xvid format so you either need to download the codec and install it or use a player like VLC Player that can view it without installing seperate codecs.
The first CM is where the image in the header of the site is from:
Welcome to JTV-ADS.net
Before we go public, we will be adding advertisements (commercials, CMs depending on which part of the world you are from) to our database. ETA of the official launch is 2 weeks from now. Hope you can wait 