'Jem and the Holograms' and a lesson in botched nostalgia

(This is the ninth installment in a series that looks at the most fascinating celebrity and pop culture news of the week.)If you're going to tap into nostalgia, you have to do it right.Hollywood repeatedly learns this lesson when fans clamor for a favorite TV show or movie to return...and are then inevitably disappointed by the reboot. However misguided reboots are, there's usually at least one aspect that makes viewers consider reinvesting. Maybe it's to see how certain TV actors aged ("Dallas"...