Sesame Street Stars Stress Out Stephen Colbert! See The Meltdown HERE!

Stephen Colbert has had some real luminaries on his show – Michelle Obama, Matt Damon, Dolly Parton – but on Thursday night’s show he welcomed his biggest guest ever- Big Bird!

The Sesame Street star dropped in to The Colbert Report to debate with his fellow muppet Oscar The Grouch over some real important “S”.

It was a real battle of fowl VS foul, moderated by Stephen himself!

Find out who won, and why Stephen is so upset about the whole debate debacle …AFTER THE JUMP!!!

[Image via Comedy Central.]