This Week on the Colbert Report

MONDAY 12/11 -- Dr. Peter Singer -- author, "The Way We Eat: Why Our Food Choices Matter"

TUESDAY 12/12 -- Dan Savage -- author, "The Kid: What Happened After My Boyfriend And I Decided To Get Pregnant"

WEDNESDAY 12/13 -- Doris Kearns Goodwin -- author, "Team Of Rivals"

THURSDAY 12/14 -- Daniel Pinchbeck -- advocate for the use of psychedelic drugs