@justjimmy, as for my understanding of what MVP is — there actually needs to be an actual functioning product... although, Eric himself does mention in his 'Lean Startup book' to products that qualify under the MVP title with just a video (Dropbox) and a Concierge service (don't remember the product)... I do find it weird that he mentions those as qualifying, since they really just validate the business model.
One of his (Eric) simplest definitions for a MVP was a product that could easily go through a full cycle in the lean.feedback loop: https://skitch.com/vince.baskerville/gixq3/mvp-feedback-loop which should/hopefully help distill what customers want & thus actually pay for.