MoogleMan

^Honourifics exist in the chinese language but are archaic and haven't been used for a loooong time

According to wikipedia:

Caxias Shimada, lyrics

Yuki, music (real name, Yabuuti Hiroki)
http://ameblo.jp/utautai-yuuki

Cassius/Caxias Shimada is Shimada Shinsuke (the host of Quiz Hexagon and a couple other shows)

^that's because everyone outside of the center of the universe hates it

Looks like Yaguchi is playing some more Wii, this time playing World of Goo (which is awesome btw)
there's a short clip in the digest video in the Minna no Nintendo Channel at about 16 seconds in:

Oh right, third thing: Tokuban is the new Utaban? If something, I must download that immediatly .

Tokuban is just what utaban calls its specials which last longer than its usual time slot if I'm not mistaken.