About six weeks ago I gave a talk at iOS Dev Camp about iOS architecture. Justin Williams was in the audience and invited me to be a guest on his podcast, CocoaRadio, to talk more about it.
You can find the episode on his website or you can find it on iTunes. And if you’re an iOS developer or just interested in tech generally, I strongly encourage you to check out the other episodes. Very technical topics with episodes sticking to 30 minutes so they remain approachable.