There is a very interesting, if somewhat bizarre, article in this month's Archaeology Magazine about the possibility of cloning Neanderthals. The article takes a look at the ethics of doing something like that, and looks at the ethical questions from from several angles.
I, personally, do not think they will ever be able to clone a human, or higher level hominids for that matter, at least without years of severe genetic mutations. I think one good set of photos of some poor, deformed half-human monster in a cage, and just about every country in the world would ban such research.
Ah well, something to consider. Best I can do at 5AM with a baby screaming.