I don't like "productivity" as it exists today on the web. Most of it is hypothetical preaching about an imaginary and idealized world.
The best stuff I've heard in the past year has all come out on the Shawn Today podcast. It's Shawn Blanc just talking about real, complicated, hard stuff. No "solutions". No "hacks". Just logic and honest thinking. If you're not a member, you are only hurting yourself.