Morgan Freeman met his vocal doppelganger when he stopped by 'The Late Late Show With Craig Ferguson' (Weeknights, 12:37AM ET on CBS).

Now lots of people love Morgan Freeman's voice, and many have tried -- and failed -- to impersonate it. However, Craig Ferguson's robot sidekick Geoff Peterson's impersonation was so dead-on that Freeman was astonished.

"See, when I open my mouth it makes everything sound smart," said Geoff. Freeman really was astounded and said it was the first time he'd heard himself "from the outside."

He and Geoff then had a conversation in which Freeman dared Geoff to talk about Ferguson, but the robot balked.

Ferguson was so relieved that Freeeman was taking it all in such a light-hearted way, as he said a previous impersonation hadn't fared so well. Michael Caine's reaction when he heard Geoff do his voice? "Well that wasn't very good at all, was it."