I don't think these people are from this planet... First there is the obvious two. David Bowie & Gary Numan. Both odd looking, both are extremely talented. Then there is Pat Benatar, can't say she is talented but looks like an alien nontheless. Nobody's head is almond-shaped like that, and not an alien. Even though he doesn't look very alien-like... David Byrne, there is nothing human about that guy except for his body. It's a conspiracy I tell you.
Of course, I am convinced that Andy Kaufman and Nick Drake will also do this. Though their planets would be quite different.