In the premiere episode of The Colbert Report, Stephen starts off the show with a segment called The Word coining the term "Truthiness". Other segments include: The Threat Down rating avian flu, basketball, babies, hurricanes and James Brady. Stephen interviews Stone Phillips, an Emmy award winning journalist and host of Dateline NBC. At the end of the interview, Stephen and Stone Phillips have a competition of gravitas.

TONIGHT: Stephen Colbert welcomes 60 Minutes correspondent, Lesley Stahl!

TONIGHT: Stephen Colbert welcomes journalist, Fareed Zakaria!

TONIGHT: Stephen Colbert welcomes host of Mad Money, Jim Cramer!

TONIGHT: Stephen Colbert welcomes host of Lou Dobbs Tonight, Lou Dobbs!

TONIGHT: Stephen Colbert welcomes author of "It's Called a Breakup Because It's Broken: The Smart Girl's Break-Up Buddy", Greg Behrendt!

TONIGHT: Stephen Colbert welcomes astrophysicist and author of "Origins: Fourteen Billion Years of Cosmic Evolution", Neil DeGrasse Tyson!

TONIGHT: Stephen Colbert welcomes actor, Jeff Daniels!

TONIGHT: Stephen Colbert welcomes co-host of Connected: Coast to Coast, Monica Crowley!

TONIGHT: Stephen Colbert welcomes filmmaker author, Ken Burns!

TONIGHT: Stephen Colbert welcomes author of "Where God Was Born: A Journey by Land to the Roots of Religion", Bruce Feiler!

TONIGHT: Stephen Colbert welcomes star of The West Wing, Bradley Whitford!

TONIGHT: Stephen Colbert welcomes the New York State Attorney General, Eliot Spitzer!

TONIGHT: Stephen Colbert welcomes CourtTV anchor, Catherine Crier!

TONIGHT: Stephen Colbert welcomes author of "Spook: Science Tackles the Afterlife", Mary Roach!

TONIGHT: Stephen Colbert welcomes anchor and newswoman, Cokie Roberts!

TONIGHT: Stephen Colbert welcomes former Senator Bob Kerrey!

TONIGHT: Stephen Colbert welcomes Reverend Al Sharpton!

TONIGHT: Stephen Colbert welcomes author of "Spanking the Donkey", Matt Taibbi!

TONIGHT: Stephen Colbert welcomes star of Zathura, Tim Robbins!

TONIGHT: Stephen Colbert welcomes the author of The Fabric of the Cosmos: Space, Time, and the Texture of Reality, Brian Greene!

TONIGHT: Stephen Colbert welcomes the author of several science books, Richard Preston!

TONIGHT: Stephen Colbert welcomes author of The Dictionary of Republicanisms, Katrina vanden Heuvel!

TONIGHT: Stephen Colbert welcomes the author of The Scorpion's Gate, Richard Clarke!

TONIGHT: Stephen Colbert welcomes the author of Are Men Necessary?, Maureen Dowd!

TONIGHT: Stephen Colbert welcomes the Host of Anderson Cooper 360, Anderson Cooper!

TONIGHT: Stephen Colbert welcomes the author of Attack the Messenger: How Politicians Turn You Against the Media, Craig Crawford!

TONIGHT: Stephen Colbert welcomes the author of John Paul the Great: Remembering a Spiritual Father, Peggy Noonan!

TONIGHT: Stephen Colbert welcomes co-host of The Early Show, Harry Smith!

TONIGHT: Stephen Colbert welcomes the host of Costas Now and sports commentator, Bob Costas!

TONIGHT: Stephen Colbert welcomes actor and star of The Family Stone, Dermot Mulroney!

TONIGHT: Stephen Colbert welcomes the owner of the Dallas Mavericks, Mark Cuban!