It would be hilarious if they do 'What you talking about Willis?' for Hodor. LOLWhen the casting sheet for what appeared to be a young Ned Stark, Lyana etc, I assumed that the large youth described would be Robert Baratheon. I didn't see the Hodor issue coming. IIRC, in the books he was always slow-witted, so this plot point of how he turned from Willis (I assume they changed him from the book name of Walder as Walder Frey may surface this season) to Hodor could be interesting. (I don't foresee any 'What you talking about Willis?' jokes, sadly)