On this week's all-star episode, tech commentator Kirk McElhearn, Macworld's "iTunes Guy," discusses lemons for 2012, a list of the products that caused him lots of grief. He'll also talk about the prospects for an Apple TV set. You'll also hear from tech journalist Rob Pegoraro, who writes a weekly column for USA Today," discussing the recent Consumer Electronics Show (CES) in Las Vegas, including some of the great and not-so-great product intros.