On a purely scientific level I'd love to see just how far drugs can take an athlete. I see this as having the added benefit of actually giving some numbers to the 'enhancing' bit of performace enhancing. As it stands drugs are banned from the sporting arenas but it is actually unknown as to the measure of performance gain.

Obviously an athlete may die, but hey, people die all the time.

Just think, you would be remembered if you ran a blisteringly fast 1000m and then your heart exploded