- Shia LaBeouf
- Â Louis Stevens / ... 65 episodes, 2000-2003
- Christy Carlson Romano
- Â Ren Stevens 65 episodes, 2000-2003
- Nick Spano
- Â Donnie Stevens 65 episodes, 2000-2003
- Tom Virtue
- Â Steve Stevens 65 episodes, 2000-2003
- Donna Pescow
- Â Eileen Stevens / ... 65 episodes, 2000-2003
- A.J. Trauth
- Â Alan Twitty 56 episodes, 2000-2003
- Margo Harshman
- Â Tawny Dean 46 episodes, 2000-2003
- Fred Meyers
- Â Tom Gribalski 30 episodes, 2000-2003
- George Anthony Bell
- Â Principal Conrad Wexler 23 episodes, 2000-2003
- Steven Anthony Lawrence
- Â Beans / ... 22 episodes, 2001-2003
- Lauren Frost
- Â Ruby Mendel 21 episodes, 2001-2003
- Jim Wise
- Â Coach Tugnut 17 episodes, 2000-2003
- Ty Hodges
- Â Larry Beale 13 episodes, 2000-2002
- Kenya Williams
- Â Monique Taylor 13 episodes, 2001-2003
- Gary LeRoi Gray
- Â Nelson Minkler 9 episodes, 2001-2002
- Brandon Davis
- Â Bobby Deaver 7 episodes, 2001
- Jerry Messing
- Â Artie Ryan 5 episodes, 2000-2002
- Jayson Weiss
- Â Lefkowitz 1 episode, 2001-2003
- Kelli McCarty
- Â Ms. Lovelson 5 episodes, 2001-2002
- Eric Jungmann
- Â Ivan 4 episodes, 2000-2001
- Brandon Baker
- Â Zack Estrada 4 episodes, 2000-2003
- Jody Howard
- Â Cynthia Mills 3 episodes, 2000-2001
- E.J. Callahan
- Â Teacher 3 episodes, 2000
- Molly Orr
- Â Denise / ... 3 episodes, 2001-2003
- James Healy Jr.
- Â Mr. Winnick 3 episodes, 2001-2002
- Eddie Vee
- Â DJ Breezy Breeze 3 episodes, 2001-2002
- Tara Lynn Thompson
- Â Kim 3 episodes, 2002
- Efren Ramirez
- Â Scrub Patrol 2 episodes, 2000-2001
- Michael Yum
- Â Muke / ... 2 episodes, 2000-2001
- Shannon Marshall
- Â Charlotte 2 episodes, 2000
- Megan Miyahira
- Â Jewel 2 episodes, 2000
- Seth Adam Jones
- Â Trevor Dunn 2 episodes, 2000
- Niner Parikh
- Â Cab Driver / ... 2 episodes, 2001-2003
- Chas Dewey
- Â Kitna Twin 2 / ... 2 episodes, 2001-2002
- Chris Dewey
- Â Kitna Twin 1 / ... 2 episodes, 2001-2002
- Lisa Foiles
- Â Carla 2 episodes, 2001
- Brenden Jefferson
- Â Ryan Zellpepper 2 episodes, 2001
- Bianca Lopez
- Â Mandy Sanchez 2 episodes, 2001
- Krysten Leigh Jones
- Â Marla 2 episodes, 2001
- Tania Gunadi
- Â Allison Wong 2 episodes, 2002
- Sean McNamara
- Â Cowboy Singer / ... 2 episodes, 2002
- Leah Cohen-Mays
- Â Dancer 1 episode, 2002
- Alessandra Torresani
- Â Mimi Nagurski 1 episode, 2000
- Christopher Rodriguez Marquette
- Â Curtis Stevens 1 episode, 2000
- Jennifer Freeman
- Â Chloe 1 episode, 2000
- Sawyer Sweeten
- Â Milton 1 episode, 2000
- Linda Porter
- Â Lady in the Street 1 episode, 2000
- Barry Pearl
- Â Mr. Chaney 1 episode, 2000
- Sullivan Sweeten
- Â Milton 1 episode, 2000
- Michele Nordin
- Â Yvette 1 episode, 2000
- Jay Leggett
- Â Wallace Randall 1 episode, 2000
- Lillian Adams
- Â Barbara Bushwick 1 episode, 2000
- Scott Thompson Baker
- Â Porter Dandridge 1 episode, 2000
- Austin Stout
- Â Russell 1 episode, 2000
- Chase Penny
- Â Jason Bagwell 1 episode, 2000
- Christopher Michael
- Â Referee 1 episode, 2000
- Wendy Worthington
- Â Elsa Schotz 1 episode, 2000
- Murphy Dunne
- Â Mr. Walsh 1 episode, 2000
- Kimberly Brooks
- Â Ms. Baker 1 episode, 2000
- Julius Charles Ritter
- Â Boy in Cafeteria 1 episode, 2000
- Anthony Burch
- Â Ernie Morton 1 episode, 2000
- Lauren Eckstrom
- Â Girl in Hall 1 episode, 2000
- Gregory Siff
- Â Quincy Dandridge 1 episode, 2000
- Alexis Lopez
- Â Danica Henderson 1 episode, 2000
- Molly Brenner
- Â Punk Singer 1 episode, 2000
- Cheyenne Wilbur
- Â Man in Crowd 1 episode, 2000
- Ken Takemoto
- Â Tokyo Rick 1 episode, 2000
- Gregg Russell
- Â Tap Dancer 1 episode, 2000
- Ginger Kinison
- Â June Marie 1 episode, 2000
- Christopher Winsor
- Â Kid 1 episode, 2000
- Sarah Dalton
- Â Country Singer 1 episode, 2000
- Kimberly Mcgee
- Â Jennifer lopez 1 episode, 2000
- Byron Smith
- Â Punk Singer 1 episode, 2000
- Pamela Rowan
- Â French Teacher 1 episode, 2000
- Pat Lach
- Â Counselor Delk 1 episode, 2000
- Angeline Holmes
- Â Ren's Friend 1 episode, 2000
- Timothy Everett Moore
- Â Blake Thompson 1 episode, 2000
- David Shophet
- Â Standing on the Side 1 episode, 2000
- Julie Anne Kominski
- Â Student 1 episode, 2000
- Philip Weiner
- Â Jock 1 episode, 2000
- Danica McKellar
- Â Sandrine 1 episode, 2001
- Richard Kind
- Â Uncle Chuck Stevens 1 episode, 2001
- Mindy Sterling
- Â Ms. Lynch 1 episode, 2001
- Carlos Alazraqui
- Â Dr. Paz 1 episode, 2001
- Greg Ellis
- Â Chef Pierre 1 episode, 2001
- Marta DuBois
- Â Mrs. Estrada 1 episode, 2001
- Jim Meskimen
- Â Dr. Dean 1 episode, 2001
- Francine York
- Â Betty London 1 episode, 2001
- Joe Flaherty
- Â Mr. Rupert 1 episode, 2001
- Deprise Brescia
- Â Ms. Morgan 1 episode, 2001
- Candace Kita
- Â Reporter 1 episode, 2001
- Wesley Mann
- Â Mr. Crappizi 1 episode, 2001
- Karen Maruyama
- Â Millie 1 episode, 2001
- Sonya Eddy
- Â Mrs. Walters 1 episode, 2001
- Aaron Fors
- Â Kevin 1 episode, 2001
- Toshi Toda
- Â Mr. Yang 1 episode, 2001
- Lee Benton
- Â Dottie Woods 1 episode, 2001
- Michael Tylo
- Â Dave Woods 1 episode, 2001
- Joe Bays
- Â Wacky Walter 1 episode, 2001
- Aysia Polk
- Â Tiffany 1 episode, 2001
- J.D. Hall
- Â Dr. Henri LaGrange 1 episode, 2001
- Jeremy Guskin
- Â Zippy Winds 1 episode, 2001
- Ryan Raddatz
- Â Security Guard 1 episode, 2001
- Walter Franks
- Â David Blackburn 1 episode, 2001
- David Jean Thomas
- Â Colonel Beale 1 episode, 2001
- Julia Faye West
- Â Gwendalyne 1 episode, 2001
- Samantha Brooks
- Â Carly Blaine 1 episode, 2001
- Zaid Farid
- Â Todd 1 episode, 2001
- Seth Miller
- Â Lenny Cranepool 1 episode, 2001
- Mark Barry
- Â Self 1 episode, 2001
- Christian Burns
- Â Self 1 episode, 2001
- Owen the Golden Retriever
- Â Princess 1 episode, 2001
- Benjamin Viccellio
- Â Scabby 1 episode, 2001
- André Carthen
- Â Policeman 1 episode, 2001
- Juan Canopii
- Â Camera Man 1 episode, 2001
- Nikko Estrada
- Â Carlos 1 episode, 2001
- Ste McNally
- Â Self 1 episode, 2001
- Michael Massengale
- Â Dingo Player 1 episode, 2001
- Clyde Kusatsu
- Â Tex Nagita 1 episode, 2002
- Jason Marsden
- Â Norman Squirelli 1 episode, 2002
- Sean Faris
- Â Scott Brooks 1 episode, 2002
- Robert Pine
- Â Specs Richardson 1 episode, 2002
- Alexander Gould
- Â Grayson Gribalski 1 episode, 2002
- Kathryn Joosten
- Â Edna Manning 1 episode, 2002
- Naya Rivera
- Â Charlene 1 episode, 2002
- J.P. Manoux
- Â Shorty 1 episode, 2002
- Alexa Nikolas
- Â Young Ren 1 episode, 2002
- Aloma Wright
- Â Mother Wexler 1 episode, 2002
- Phyllis Diller
- Â Coach Korns 1 episode, 2002
- Dave Thomas
- Â Uncle Tug 1 episode, 2002
- Jansen Panettiere
- Â Kupchack's Son 1 episode, 2002
- Ron Kuhlman
- Â Mr. Kitna 1 episode, 2002
- Marvin Kaplan
- Â Old Guy #1 1 episode, 2002
- Bradley Joseph
- Â Lloyd Offler 1 episode, 2002
- Mary Stein
- Â Lynn Shannon 1 episode, 2002
- RaéVen Kelly
- Â Denise 1 episode, 2002
- DeeDee Rescher
- Â Babs Mendel 1 episode, 2002
- Time Winters
- Â Nicky Pox 1 episode, 2002
- Federico Dordei
- Â Roland 1 episode, 2002
- Alexander Folk
- Â Mr. Hale 1 episode, 2002
- James Sie
- Â Chemistry Teacher 1 episode, 2002
- Buck Kartalian
- Â Old Guy #2 1 episode, 2002
- Mathew Botuchis
- Â Travis Gresham 1 episode, 2002
- John J. York
- Â Barry Hudson Jr. 1 episode, 2002
- Spencer Redford
- Â Chris 1 episode, 2002
- Matt O'Toole
- Â Mason 1 episode, 2002
- Nicole Hayden
- Â Ally 1 episode, 2002
- Bianca Ruiz Brockl
- Â Girl Scout 1 episode, 2002
- Emily Yancy
- Â Mrs. Culpepper 1 episode, 2002
- James Lancaster
- Â The Duke 1 episode, 2002
- Robert Pierce
- Â Mr. Kupchack 1 episode, 2002
- Eamonn Roche
- Â Mr. Landau 1 episode, 2002
- Kim Delgado
- Â Gus 1 episode, 2002
- Byrne Offutt
- Â Mr. Durbin 1 episode, 2002
- Marc Daniel
- Â Hector 1 episode, 2002
- April Gilbert
- Â Kelly Kerwin 1 episode, 2002
- Yolanda Snowball
- Â Tanya Taylor 1 episode, 2002
- A.M. Driver
- Â Ren's Friend 1 episode, 2002
- Audrey K. Baranishyn
- Â Co-Star 1 episode, 2002
- J. Anthony McCarthy
- Â Luther 1 episode, 2002
- Mary Portser
- Â Antiques Appraiser 1 episode, 2002
- Eric Ware
- Â Dr. Herlihy 1 episode, 2002
- Pamela Warren
- Â Woman in Movie 1 episode, 2002
- Ariel Baker
- Â TV Reporter 1 episode, 2002
- Lorraine Fields
- Â Dancer 1 episode, 2002
- Mike Randleman
- Â Mr. Bartlet 1 episode, 2002
- Samantha Tabak
- Â Lady Jane 1 episode, 2002
- Maya Lott
- Â Sylvia 1 episode, 2002
- Josh Seffinger
- Â Dancer 1 episode, 2002
- Daniel Faltus
- Â Chives 1 episode, 2002
- Jerry Brennan
- Â Louis Manning 1 episode, 2002
- Michael Copon
- Â Boy at Beach 1 episode, 2003
- Charlie Stewart
- Â Little Timmy 1 episode, 2003
- Beau Billingslea
- Â News Anchor (2003) 1 episode, 2003
- Kyle Gibson
- Â Gil 1 episode, 2003
- Gibby Brand
- Â Father O'Neil 1 episode, 2003
- Robin Shorr
- Â Ms. Jenkins 1 episode, 2003
- David Berry
- Â Chuck 1 episode, 2003
- Ivette Sosa
- Â Sammi the salesgirl 1 episode, 2003
- Chris Berman
- Â Sportscaster (uncredited) 1 episode, 2000
- Tony Collucci
- Â Student (uncredited) 1 episode, 2000
- Audrey Wasilewski
- Â Irene Roman (uncredited) 1 episode, 2001
- Phil Hawn
- Â Teacher (uncredited) 1 episode, 2001
- Pamela Rickard
- Â Student (uncredited) 1 episode, 2002
- Cashalà L'Shauntyelle
- Â Model (uncredited) 1 episode, 2002
- Zeb Roberts
- Â Guy in Arcade (uncredited) 1 episode, 2002