March 20, 2007 - Willie Nelson

In this episode, scientists say homosexuality starts in the womb. Evidently, they're in there renovating. Then, it's Stephen Colbert Day in Oshawa, Ontario -- finally, a reason to visit Canada. Plus, my guest tonight is country music legend Willie Nelson. Sorry, Jerome Groopman fans, you missed him by one day. Hey camels -- stop showing off and drink something. This is The Colbert Report.