Souun Takeda (武田双雲) is my favorite Shodouka (Japanese calligraphy artist), his artworks are AWESOME. Almost all of his works are copyrighted so the only video I can put here is a 30sec clip officially distributed on YouTube by Discovery Channel:
NicoNicoDouga artists creates shodo arts and creates videos:
The artist's nickname is "Himajin Yanai (Himajin means he has lots of spare time...) the letters written on the video are the lyrics of the song by a musician called ACIDMAN.
Another video by the same artist:
I know it is difficult to understand what's happening but the artist
changes the style of the letters based on the lyrics, and for the 2nd
phrase starts playing around a bit more.
For example, this letter is "eye(目)", and the calligraphy looks like an eye:
Another example, this letter is "fly(飛ぶ)" and the letter looks like a person is flying:
This one is drawn by another artist called monomono, and the letters moves this time. The music and lyrics are from an animation called "Gintama", the main character is a man and you can see the letters are written with a strong and man-ly touch.
This one is drawn by monomono again, the music is from a game called Touhou, and the characters that appear in Touhou are girls, so the letters written here are much more softer and girly than the letters above.