Also, what feats have you seen done in the past that, with modern understanding of science, are scientifically inaccurate or impossible?
He managed to lead a secret life wearing tights without being ridiculous, pulling the wool over 2+ nosy women, for decades.
As for juggling planets, he'd rarely _juggle_ them AFAIK, but he'd jostle multiple planets around when it suited the plot. I remember him tugging multiple planets around with chains without much effort.