Maxim had a Maxim girl in 2004 who was 100% CGI. that would be
an interesting focus group. "how many readers realized Natasha (or
whatever her CGI name was) was not a real human being?" the few
images i saw @ CGSociety looked very real, at first glance.
plus there's one aspect of human anatomy - some real people look
cartoony. there was one woman in a swimming class i took about a
year ago that looked like the figure model Doonesbury used for some
of his characters.
put a high-res image of a cartoony-looking real person next to a
photo-real image created by someone gifted in CGI - that's a test
i'd like to see, as long as the real person is compensated for the
indignity of being called "cartoony" looking.
i would say the skill sets have been in existence for quite a while
now, among some CGI people, for still images. maybe 5 years.
for animation, e.g. a 3 minute short, if you took 10 of the top
1000 hands-on CG people, and found someone who was a dead
ringer for Bush's voice, you could do a "Bush press conference"
that would look completely real to a lot of the general public.
of course it gets harder if the output is 1080p or above.
if you look at some of the recent work of some of the more
skilled people at
http://www.cgsociety.org/
what i'm talking about might be more apparent.
there was one guy's private project, called "the normals",
about 3 middle-aged guys in a public restroom, not porn or
anything, just trying to make something photoreal. very
very impressive.