My sister was recently interviewed by the Nike Plus marketing team. She uses the Nike Plus running system with her iPod, but she didn't use the Nike Plus shoes - she cuts out a section from the base of her trainer to simulate the Nike Plus shoes.
But now, as a thank you for the interview, she has some real Nike Plus running shoes and various other bits of running kit.
The Nike site is a pain to reach: Start here, choose Recovery Training with Paula Radcliffe and then "Anna Finn". They'll feature someone else before long so be quick.
Men's Health have a much more static looking link but a less cool photo.