Emil weighs in on various gaming topics in a podcast which can be heard here at GameTheoryShow.com - or you can read a 2-page briefing over at Next-Gen.biz
Here's an excerpt from the bethblog -
Next-Gen: Because it’s different for every game designer, give us your idea of what storytelling is in games.
Pagliarulo: I think it changes all the time. I think even with the release of GTA IV it has even changed again. Who knew that GTA IV would progress narrative in videogames. I don’t think anyone saw that coming. But for me story in videogames is about writing for the medium. It’s getting people who understand videogames and how to craft a story for videogames, so that you have a mix of a solid narrative that the player can understand and be involved with, while using the medium of a videogame to let the player craft his own narrative. I think there’s a mix of both, and you need to have people who understand the medium in order to do that, or to give the player what they want in that regard.
I recommend the podcast, as it gives a much better feel for what Emil is trying to convey, and has a lot more information than what you read over @ Next-Gen.