This is my (or a good representation of the) thing that probably gets me through runs better than food... the iPod mini (4GB) in blue. I got this for my 20th birthday. Since training for races began, I only listen to it while running (as another incentive). My only complaint is that it is too heavy, but as they say, the weight is worth it.
UPDATE: As of 04/27/07, this device no longer belongs to me. I passed it on when I received my upgrade. =)