I'm not the parent poster, but I'd basically say: are there any examples at all? Even if we're really loose with what qualifies as "lean startup" are there any examples anyone would be willing to share?

I don't mean to imply that there aren't any, but I just haven't heard of any.

If you read The Lean Startup there are examples in there. I mentioned above WPEngine did it, but also look at Food on the Table. These stories show the lean startup done right. The story above is so riddled with holes. It's like the guys heard some buzzwords, read a wikipedia page, and ran with their limited understanding of it.