David O'Reilly and Kim Laughton curate a wonderful head innards shaking website, Hyper Real CG, that shows a collection of pictures that look completely real but are actually just hyper real 3D art made from CG. It's really crazy how close to real life we can get with art.
The above image was done by Beards.
Image by dragon, a "realistic self-portrait, nearly complete but need to spend more time on the eyes"
Image by simon33, "getting to grips with Maya fur!"
Image by David OReilly, "Classic Rusty Fire Hydrant"
Image by angelofretribution, "classic garden scene"