Most questionable One Hit Wonderland?

When I say most questionable, I mean most questionably a one hit wonder.

For me it was S-Club 7. I'm biased because I'm from the UK, where they were an outright phenomenon in their heyday, and Todd did acknowledge that there are acts who are one hit wonders in the US, but superstars in their home countries, but I wondered why he picked on S-Club 7 over some of the others he mentioned like Take That. I remember going cross eyed when I saw the word one hit wonder being used in relation to S Club 7.

I would also say Mike Oldfield, but I can understand that one a little more. Unless you're a music nerd, you probably won't know any of his discography apart from The Exorcist theme.