I have rarely seen such a terrific presentation by a relatively unknown speaker absolutely KILL the audience, and NEVER had i seen ~150 people get up after the talk was over, and follow him into the hallway for a followup conversation (can't you just feel the Who / Tommy concert crush in that pic?)
and it rings true whenever startup geeks listen to what he's saying. I've had the pleasure of seeing several of Eric's Lean Startup presentations, and they're all fabulous. it's refreshing to hear someone speak concretely from their own experience (both failure & success), and then summarize Startup Lessons Learned for the rest of us to grok at our leisure.
If you'd like to hear more about the Gospel that Eric is preaching, i STRONGLY encourage you to signup for the O'Reilly masterclass on Lean Startup methodology he'll be teaching in San Francisco on May 29th (and other places later). the price might be a bit steep for a startup budget, but the knowledge & learning & value for your company you'll take away from it will likely be priceless.