So you may have read about this in the news yesterday. George Takei got into a verbal spat with Arnold Schwartzenegger on the air about the gay marriage bill Arnold vetoed. Eventually Takei got Arnold to promise to sign gay marriage into law.
Problem was, it was fake Arnold. Poor George had no idea... he's terribly naive. I don't have the original broadcast, but here's an edited replay, with narrative interruptions.

WrathSkull
That's funny baiting a naive gay man ito an on air fight about gay marriage?
Paul "Crom, I have never prayed to you before. I have no tongue for it... All that matters is that today, two stood against many. Valor pleases you, so grant me this one request. Grant me revenge! And if you do not listen, the HELL with you!"
Khaylin
If by "fake arnold", you mean a series of sound bytes, then yes.
SewerWyvern
It's an actual guy, no sound bytes. He's brilliant. The impersonation is dead on.
http://www.myspace.com/fakearnold