Greg lieu gay fuss is one of the best divers ever. still he doesn't think of diving defines him. >> i started purchasing on stage when i was three and sinking, dancing, gymnastics. diving is what everyone knows me from, but it's just another stage. >> reporter: louganis retired in 1998. years later the world learned he was hiv positive and had been the victim of abuse. yet for him, none of this ranks as the biggest thing he had to overcome in his life. >> probably the biggest obstacle for me, i would have to say my shyness. >> reporter: he says while diving gave him credibility and a platform ...