How would you know if you were a spy? Like, what if you were such a deep undercover agent that even you didn't know about it? This the is ominous question that Stephen Colbert confronts on the new 'Colbert Report' (weeknights, 11:30PM ET on Comedy Central).

Colbert interviews Richard Clarke -- the former counter-terrorism expert for Presidents Bush, Clinton, and Bush (Jr.). And Stephen has a few questions for him about the whole "spy game." Mr. Colbert points out that there are so many undercover agents out there that almost anyone could be a spy. In fact, the pair discusses the fact that are nearly as many intelligence agencies as there are "Starbucks" coffee houses. Which means that ... there's quite a lot of them.

Then, Stephen asks a question of Mr. Clark, the expert: "Is there any chance that I'm a spy and don't know it?"

Richard Clarke's reply -- basically -- is this: Maybe. ... So Colbert could be a spy. Makes sense. After all, Stephen does seem a little shifty sometimes.