Rick Rubin and Malcolm Gladwell's 'Broken Record'
Format: Rubin and guests discuss how songs are made. Gladwell narrates.
Schedule: Whenever they feel like it
Why They Do It: "It's as important to hear artists talk as it is to hear them play," Gladwell says.
Best Guest: Eminem, who broke down the influences behind his single "Walk on Water," for an easy-to-digest 15-minute installment. It's also the only episode: "More are coming by the end of the year," Rubin promises.