Here's a little bit:
The last question asked was about Dom's favourite scene in all three movies. "I don't want to spoil it but Merry's main link is Pippin. In the third movie they go their separate ways, which is quite sad. The pinnacle of Merry is when he finally comes back again and sees Pippin. If they had been together they would have been OK. But because they've been split up they're both heavily traumatised. When they meet they don't recognise each other. Pippin has to explain who he is and Merry needs his friend from The Shire to bring him back. And they're both men now and they hug and kiss. It's beautiful"