Here's the closest you'll ever get to being Superman. A special effects company in L.A. used a remote control helicopter and a GoPro camera.
And they superimposed arms into the video, so it looks like you're Superman flying around Los Angeles helping people. It's actually REALLY well done.
(Search for "Superman with a GoPro." He starts flying at :21, stops some bad guys at :47, saves a woman from a fire at 1:26, and returns the GoPro to its "rightful owner" at 2:19.)