Orson Welles 2: Yes, Always

As most of you know, the voice of the Brain in "Pinky and the Brain" was heavily influenced by Orson Welles. What you may not know it's because Maurice LaMarche was obsessed with the frozen peas tape. To this day, he performs it between takes. And once, on "Animaniacs", they let him perform the entire thing as the Brain. The finished animation makes me cry.