Lance Gibbs gave a well-attended talk on moving from Plan-Driven to Value-Driven delivery at bpmCamp 2010 @ Stanford.? There are some great slides in this presentation, and the approach dovetails well with Lance's ability to get people focused on what matters most to their project success.
It starts with realizing that requirements are estimated, and resources and time are fixed, which is inverted from the typical plan-driven approach.? There's also a focus on "should" rather than "could." In particular, slide 4 jumps out at me, as it spells out what you should value, for example:? working software over comprehensive documentation.? Amen!
The presentation is embedded here: