Yeah, its either really damn good CG hentai, or really damn good CG something, and the pic makes it look like it's about hentai. Or it could just be the one pic, which would suck.
False. If I had a body like that, I actually might.
As for the "product" one, I've seen that one before and yeah, very good CG (You can tell on the left hand and the tentacle above it). Probably just a one shot deal, since any CGI ones I've seen out there haven't been that good a quality, although isn't there a "live-action" tentacle hentai out there somewhere?