Day[9] is a starcraft caster who's made his name with a daily video blog at
http://day9.tv. He was a competitor during Brood War in the mid-late 2000's, before Starcraft 2 was released, and his show focuses on game analysis and strategy development. He also does tournament casting for majorleaguegaming.com, dreamhack, and others.
Also, agreed--if anything, just the [9] for the 9 key would be enough; otherwise maybe the whole Day[9] on a wider key, but having them scattered all over the keyboard seems a little weird. Cool though!
