I have often sung the praise of IT Conversations, which has so many great presentations, and a few duds.
One presentation I both loved and would consider required listening is Paul Graham's presentation on Great Hackers. I had thought, by the title, this would be a piece profiling evil programmers. Instead, it talks about why and how companies attract and keep the best of the best.
One of the key points for me was the need and ability to focus for extended periods of time without being interupted. This speaks against cubicles specifically. But also, it gets to the issues that great producers of IP have to put themselves in the right mood, and that the threat of constant interuption can prevent one from putting oneself in that state of productivity, as well as the reality.
I would greatly value other people's reactions to the presentation.