After meeting Chris Matts and I at XtC May 13th, Liz Keogh pensions off the "As a <user role>... I want... So that..." format for writing user stories, first proposed at Connextra (Tim Mackinnon was team lead, I don't remember if it was his idea) -- about 5 years before the BDD thing started. [Update: Thanks to Steve Freeman for the additional detail here]
I love Liz's new format...
In order to <achieve some value>
As a <role>
I want <some feature>Technorati tag: XtC, BDD, Behavior+Driven+Development, Extreme+Programming, Agile