The 80% Lean Startup
readncode.com
readncode.com
Still, you don't read this because Ries has mastered the pen, but because he's developed a system that will eliminate waste from your startups.
I'll take Eric's writing style over Steve Yegge's any day.
Most businesses seem poor at measuring outcomes of what features they introduce but can't help but wonder if Eric's proposal is taking things too far the other way.