Desperately Seeking "Performance Unit Testing" Examples

I've been talking about what I term "Performance Unit Testing" in classes and training courses for a long time. I've been teaching (more inspiring with hints toward implementation) client development teams about it for almost as long. Problem is, all I've got is stories that I can't attribute (NDAs and such) and that simply doesn't cut it when trying to make a point to someone who doesn't (or doesn't want to) get it.

So I'm looking for attributable samples, examples, stories, and/or case studies related to "Performance Unit Testing" that I can use (clearly, with attribution) in talks, training classes, maybe even blogs & articles. If you have something, please email me.

If you're not sure if you've got what I'm looking for, lemme share some desired attributes of what I'm looking for: