To echo what a bunch of other people have already said,
The Witcher 2 - the graphics in that game are absolutely stunning, which when combined with the gorgeous art design equates to a feast for the eyes.
But just echoing what other people say isn't really my style, so why not provide an example? So here's the "Fear and Disdain" launch trailer!
Warning! Contains like a second of nudity, so NSFW and all that jazz.[footnote]Ordinarily I might be reluctant to post something that could be considered even mildly risque for fear of running afoul of the moderators, but since that exact same trailer is also here as an official "feature" on The Escapist (which is where I saw it originally), I figure it's cool if I embed it so long as I include that disclaimer.[/footnote]
"You can't really use that as an example of the graphical quality of the game itself though" I hear you say, since that wasn't gameplay footage and a pre-rendered cinematic these days generally looks pretty damn fantastic even if the game itself looks like ass? A valid point! Only not valid at all actually in this particular example because
that was all in-engine footage.
While the other typical critique of cinematic-only trailers still applies (namely that it's hard to get a feel for what the gameplay is like based only on a trailer comprised of cutscene fragments), the "you can't tell how good it's really going to look based on that" caveat doesn't - give Geralt different armor or weapons, a different hairstyle (courtesy of the 1.2 patch), or even a certain "unwanted after sobering up" neck tattoo (love that sidequest so much!) and you'll see those changes to his appearance
all the time, because everything in that trailer was rendered in-engine, in real-time.
The game really is that gorgeous.
