I have previously read and blogged about Aubrey de Grey (see this compilation post) but I just ran into a talk by Aubrey at TED.
Listen to him discuss his postulate that..
...the process of aging is merely a disease -- and a curable one at that. De Grey, a computer scientist and biogerontologist, believes humans could live for centuries, if only we approach the aging process as "an engineering problem." He outlines the seven basic ways people age, and how to "solve" each one. And if we get to work now, he says, humans alive today could live to be 1,000.
The real question is, do any of us really want to live so long? I for one do not think that I do.