There weren't many of those, but here are some talks from NDC Oslo 2012 that you might find interesting:

• The Software Team Leader Manifesto (me)
• Panel - The State of Agile and the road ahead
• What does Self-Organizing Team Really Mean? (Esther Derby)
• The Surprising Science behind Agile Leadership (Jonathan Rasmussen)
• Embracing Uncertainty (Dan North)