| 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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