Marco Arment was a guest for the latest episode of On The Verge. I enjoyed the whole 20-minute segment but I have to say that it gets especially great when Marco and Joshua start bantering about Android and iOS.
And here’s another video interview with Marco from the summer of 2009. He answers a lot of the same questions that come up in On The Verge, but this was back when Marco was still working full-time as the lead developer at Tumblr, there was no Instapaper for iPad (because, you know, there was no iPad).