They came, they conquered... they were never heard from again. After reaching the Hot 100's Top 10 with their very first singles, none of these acts managed to crack the Top 25 for the rest of the decade. But hey, four minutes of fame is better than nothing.

The one-hitmakers on this list have been ranked by how high their big song climbed on the chart compared to how far down the tally their subsequent highest-charting effort peaked.

Cassidy went all the way to No. 4 in March 2004 with "Hotel," featuring R. Kelly. But the Philly rapper checked out of the chart shortly thereafter, only making it as high as No. 33 with "My Drink N' My 2 Step" three years later.
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22

Macy Gray

Macy Gray blew up in May 2000 when her debut single, "I Try," went to No. 5. But believe it or not, the husky-voiced diva has not appeared on the Hot 100 since!
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23

The Calling

In March 2002, L.A. rockers the Calling reached their highest high when their single "Wherever You Will Go" peaked at No. 5. The band has not come calling back to the charts since.
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24

Vanessa Carlton

Vanessa Carlton wooed listeners in May 2002, when her piano ballad "A Thousand Miles" hit No. 5. Five months later, she was back on the Hot 100 with "Ordinary Day," but the song -- her second-biggest single -- barely cracked the Top 30.
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25

Ruff Endz

Baltimore R&B duo Ruff Endz went all the way to No. 5 with "No More" in September 2000. But the group never saw the top 10 again after that; they only reached No. 49 with "Someone to Love You" in June 2002.
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26

Eiffel 65

Italian dance trio Eiffel 65, whose name was generated at random by a computer program, peaked at No. 6 with the über-catchy "Blue (Da Ba Dee)" in January 2000. They've been blue ever since, as they did not see the Hot 100 for the rest of the decade, even as Flo Rida took his "Blue"-sampling hit "Sugar" all the way to No. 5.
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27
Alabama rapper Rich Boy went all the way to No. 6 on March 31, 2007 with "Throw Some D's." He ran out of steam after reaching that peak, and hasn't returned to the chart since.
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28

Nick Lachey

In May 2006, sympathetic fans helped Nick Lachey go to No. 6 with his post-98 Degrees solo single, "What's Left of Me," a song about his dissolved relationship with Jessica Simpson. But when the drama cooled, fans stopped caring; later that year his next song, "I Can't Hate You Anymore" -- his second-biggest -- only climbed to No. 87.
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29

Tweet

In May 2002, Missy Elliott and Timbaland introduced the airwaves to Tweet, whose song "Oops (Oh My)" peaked at No. 7. But Tweet only made a peep on the charts after that with "Call Me," which limped to No. 31 a month later.
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30

Hurricane Chris

Louisiana's Hurricane Chris climbed to No. 7 on the Hot 100 with "A Bay Bay" in July 2007. He specifically cat-called "Halle Berry" on his next-biggest single with far less success; the song only went to No. 52 in June 2009.
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