...sounds like an oxymoron. But thanks to the Internet, now I could cite an example.
There's a Yahoo Answers entry which discusses the question "Is amitabachan really that good or rude person?". The best answer, which could be summed up in one word: "No", also comments another Indian actor. And I'll quote:
I think [Shah Rukh Khan] is genuinely humble.i am sure he cant be fake bcoz he is not a good aactor.
Sounds like a good epitaph to me. "A genuinely humble man--because as an actor that he was, there was no way he could've faked it."