Taken roles, listed alphabetically according to username:
Updated 4-26-04
Billy Martin.
Avril Lavigne.
Tony Lucca.
Benji Madden.
Brandon Boyd.
Bam Margera.
Chris Cornell.
Chuck Comeau.
David Desrosiers.
Justin Timberlake.
Jeff Stinco
Joel Madden.
Joey Fatone.
JC Chasez.
Patrick Langlois.
Pierre Bouvier.
Sebastian Lefebvre.
Christina Aguilera.
Seann William Scott.
Travis Barker.
Ville Valo.

Roles we'd like to see picked up:
Lance Bass
Chris Kirkpatrick
Mike Einziger
Jennifer Lopez
Jason Boyd
AJ McClean
Nick Carter
Kevin Richardson
Brian Littrell
Howie Dorough
Alicia Keys
Pink
Nelly
Pharrell and the rest of N.E.R.D.
Orlando Bloom
Reese Witherspoon
Kirsten Dunst
Tobey Maguire
Ashton Kutcher
Eminem
Brittany Murphy
Etc, etc, etc.

Note: Your role does not have to be a "popstar". It can be any celebrity. The community's name should have nothing to do with your choice in character.