iCarly iGo to Japan doesn't air until November 8, but it's available early on Comcast video on demand, along with four episodes in standard and high definition, plus behind the scenes clips. Enough to keep your tween from demanding a switch to another provider that has the Nickelodeon HD channel available? Maybe not, but we expect this won't be the last cross promotion run while Comcast uses Project Infinity to narrow the HD gap.