Peter Cullen is a voice actor who is best known as the voice of Optimus Prime in the original Transformers series (he would subsequently reprise his role as Optimus in Michael Bay's live-action Transformers film series and the new Transformers Prime animated series). I can't tell you how many people were overjoyed when the original Optimus voice was also used for Bay's movie. My 30 something sister cheered. I was never into transformers like she was.
Yeah, and he voiced a whole bunch of other voices but also Eeyore! Mr. Cullen's middle name is Claver. Interesting.
I guess if you imagined a depressed Optimus Prime you can kind of hear Eeyore...no. No, I'm sorry, I just don't.
UPDATE: I see it now. Check this out.
Do you believe now, Angie? I do.