I put my slides for past talks on SlideShare and below are links to some videos.
Agile Cambridge talk on Growing eXtreme Programming Teams
Agile France keynote on Turning Product Upside Down
Agile Portugal keynote on Coaching Teams Through Change
Agile Singapore talk on Team-Driven Improvement with Retrospectives
Craft Conference talk on Coaching Teams through Change
Lean Agile Scotland talk with Aimy Ko on XP at Unruly
LSO St Luke’s Gamelan concert
NorDevCon talk on Building Learning Into Team Life
Back to the Future - What Ever Happened to Being eXtreme?