I think the subject has been done to death since high school, but there seem to be an awful lot of shows right now about one-hit wonders. VH1 did a Top 100 countdown of them a few weeks ago, and the iTunes Store just prompted me to download their One-Hit Wonders Vol. 2 collection.
What gets me is the smugness that audiophiles have about one-hit-wonders; as I like to say, they have one more hit that you ever did. Most people’s favorite bands have never yielded a hit