Click the Actor names to see the bio's:

Kiefer Sutherland a.k.a. Jack Bauer

Dennis Haysbert a.k.a. David Palmer

Carlos Bernard a.k.a. Tony Almieda

Elisha Cuthbert a.k.a. Kim Bauer

James Badge-Dale a.k.a. Chase Edmunds

Reiko Aylesworth a.k.a. Michelle Dessler

Sarah Clarke a.k.a. Nina Meyers

Xander Berkeley a.k.a. George Mason

Kim Raver A.k.a. Audrey Raines

Mary Lynn Rajskub a.k.a. Chloe O'Brian

James Morrison a.k.a. Bill Buchanan

Lots of 24-ers are on Twitter. Here's where to find them:

Kiefer Sutherland (Jack Bauer): @RealKiefer
Marci Michelle (Dialogue Consultant): @marcimichelle
James Morrison (Bill Buchanan): @JamesPMorrison
Jon Cassar (Director): @JonCassar
Mary-Lynn Rajskub (Chloe O'Brien): @Rajskub
Annie Wersching (Renee Walker): @Wersching
Howard Gordon (Creator): @HowardMGordon
Rodney Charters (Director of Photography): @rodneykiwi
Joseph Hodges (Production Designer): @joeh90
Carlo Rota (Morris O'Brien): @CarloRota
Sprague Grayden (Olivia Taylor): @Spragueg
Zachary Quinto (Adam, S2): @ZacharyQuinto
Jim Lapidus (Costume Designer): @Twitr4ACause