Who woulda thunk it? All-in-ones are officially back in. Yeah, some would argue that they never really left, but with Sony's latest family of monitor-bound PCs and HP's freshened TouchSmart line upping the ante, we'd say the war is back on. The high(er)-end TouchSmart IQ506 was recently taken for a ride over at DesktopReview, and it didn't take long for them to realize that HP was aiming for something very different with this machine. Rather than catering to the gaming or barebones crowd, this one emphasizes interaction and entertainment, and apparently, it did so in fantastic fashion. Additionally, those folks couldn't resist cracking the casing open and giving us a look inside, so if you've got a thing for untouched PCB and silicon, you know where to look.