Fools,
I am embarassed to admit that I remember it, but...

"The Greatest American Hero"

Believe it or not, I'm walking on air;
Never thought I could feel so free;
Flying away on a wing and a prayer
Who would have believed?...
Believe it or not, it's just me.

He never fully mastered flying and other powers. He was always flying into things, and landing very awkwardly.

Oh goody, perhaps the memory is still working (although it does fail me quite often).