I have NO idea why, but the theme to "The Greatest American Hero". For those who don't know, too young to know, or whatever reason, it was a VERY cheesy tv show that was on from '81 to '83 (I had to look it up just now). It was about a teacher who was asked to wear a special suit that made him become a superhero... a bumbling, not so heroic hero, but he'd somehow manage to get the job done. It was so cheesy that even as a kid, I couldn't really bear to watch it.
But, today the song is in my head, so I suppose I shall don my imaginary cape and make the best of it.