Can you name a Band or Artist that you thought could be good on the basis of hearing just one track?

only to be so disappointed upon more investigation?

Apologies to Fans of theirs, but "Radioactive" by The Kings of Leon really sent me up a blind alley.
http://www.youtube.com/watch?v=-IAxoqoqJ...

Yours please.
Update: @ Remember. Did nearly the same thing with "Bohemian like you". Big mistake.

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