Series cast summary: |
| Britney Spears | - | Herself 8 episodes, 1999-2004 |
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| Christina Aguilera | - | Herself 8 episodes, 2000-2007 |
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| Dave Meyers | - | Himself 7 episodes, 1999-2005 |
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| Wayne Isham | - | Himself 7 episodes, 1999-2001 |
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| Nick Lachey | - | Himself / - 6 episodes, 1999-2006 |
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| Hype Williams | - | Himself 6 episodes, 1999-2001 |
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| Tom Fanning | - | Himself 6 episodes, 2000-2005 |
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| Joseph Kahn | - | Himself 6 episodes, 2000-2004 |
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| mink | - | Himself 6 episodes, 2000 |
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| Francis Lawrence | - | Himself 5 episodes, 1999-2001 |
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| Eminem | - | Himself 5 episodes, 2000-2004 |
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| Jay Z | - | Himself 4 episodes, 1999-2004 |
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| Marcos Siega | - | Himself 4 episodes, 1999-2002 |
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| Charleigh Bryant-Stelly | - | Herself - Dancer 4 episodes, 1999-2000 |
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| Jessica Simpson | - | Herself 4 episodes, 2000-2006 |
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| Philip G. Atwell | - | Himself 4 episodes, 2000-2004 |
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| Dr. Dre | - | Himself 4 episodes, 2000-2004 |
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| Travis Barker | - | Himself 3 episodes, 1999-2003 |
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| Thomas DeLonge | - | Himself 3 episodes, 1999-2003 |
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| Mark Hoppus | - | Himself 3 episodes, 1999-2003 |
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| 98 Degrees | - | Themselves 3 episodes, 1999-2000 |
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| Proof | - | Himself 3 episodes, 2000-2004 |
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| Beyoncé | - | Herself 3 episodes, 2000-2002 |
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| *NSYNC | | 3 episodes, 2000-2001 |
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| Billy B. | - | Himself 3 episodes, 2000-2001 |
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| Paul Hunter | - | Himself 3 episodes, 2000 |
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| Nikki Tuazon | - | Herself 3 episodes, 2004-2007 |
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| Tony Petrossian | - | Himself 3 episodes, 2006 |
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| Ryan Allen Carrillo | - | Roller Skater 2 episodes, 1999-2006 |
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| Mariah Carey | - | Herself 2 episodes, 1999-2005 |
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| Brett Ratner | - | Himself 2 episodes, 1999-2005 |
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| Zooey Deschanel | - | Herself 2 episodes, 1999-2002 |
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| Nigel Dick | - | Himself 2 episodes, 1999-2000 |
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| LL Cool J | - | Himself 2 episodes, 1999-2000 |
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| Jennifer Lopez | - | Herself 2 episodes, 1999-2000 |
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| Matthew Rolston | - | Himself 2 episodes, 1999-2000 |
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| D12 | - | Themselves 2 episodes, 2000-2004 |
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| Blink-182 | - | Themselves 2 episodes, 2000-2003 |
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| Fred Durst | - | Himself 2 episodes, 2000-2003 |
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| Tom Dumont | - | Himself 2 episodes, 2000-2002 |
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| Tony Kanal | - | Himself 2 episodes, 2000-2002 |
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| No Doubt | - | Themselves 2 episodes, 2000-2002 |
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| Gwen Stefani | - | Herself 2 episodes, 2000-2002 |
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| Adrian Young | - | Himself 2 episodes, 2000-2002 |
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| Ricky Martin | - | Himself 2 episodes, 2000-2001 |
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| Lance Bass | - | Himself 2 episodes, 2000 |
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| J.C. Chasez | - | Himself 2 episodes, 2000 |
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| Gregory Dark | - | Himself 2 episodes, 2000 |
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| Joey Fatone | - | Himself 2 episodes, 2000 |
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| Chris Kirkpatrick | - | Himself 2 episodes, 2000 |
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| Drew Lachey | - | Himself 2 episodes, 2000 |
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| Kim Smith | - | Herself 2 episodes, 2000 |
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| Justin Timberlake | - | Himself 2 episodes, 2000 |
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| Snoop Dogg | - | Himself 2 episodes, 2001-2006 |
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| Usher Raymond | - | Himself 2 episodes, 2002 |
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| Shakira | - | Herself 2 episodes, 2002 |
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| Madonna | - | Herself / - 2 episodes, 2003-2006 |
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| Matthew Felker | - | Hero / - 2 episodes, 2004 |
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