The 2000s were chock-full of bop-worthy tuneage. And these hits were definitely worth risking the F.B.I. busting down your parents' front door over your LimeWire downloads. While some mega-stars from the 2000s music scene have stood the test of time (read: "It's Britney, bitch") there are many others who cranked out one mega-hit single and then faded from the scene. If you've ever been humming your favorite throwback song and thought, "I wonder what happened to the. That hit was my JAM" then this list of 2000s one-hit wonders is for you.