I drive my kids crazy when I critique dramas based on their science content. Don't get me started on Eureka! Listen to the science consultant for Watchmen (Physicist James Kakalio of University of Minnesota) talk about the quantum mechanical underpinnings of Dr. Manhattan's powers.
Personally the power I want is the ability to diffract! One copy could make dinner, another tidy the sunroom and a third grade papers - then I could happily take a walk! Though if I recall, Calvin tried this (scroll down to Scientific Progress goes "boink"?) in Calvin and Hobbes and it did not end well for Calvin.
The video is for class today - now, it's back to grading for this version of myself!