He's uncommonly good at ventriloquism, and he did it uncommonly well, by God!
他非常擅长口技, 而且他做得非常好, 上帝保佑!
谷歌名人访谈录
So in " Being John Malkovich, " you got identity that is very literally looked at as a form of ventriloquism, expressing one's essence through other vessels.