Key is no. 2 on my list. xDD
He used to be no. 1 but that was before I spotted the dubu leader, he's so adorable. <333

10 hours of Tetris?! Reminds me of the time when Nyan Cat was popular and listened to the 10 hours (or something) version of it. xD I'm gonna go find the 10 hours of Tetris. /o/

Edit: xD Amane beats me to Nyan Cat~