Most realistic scene for blender demonstration?

I am quite new to Blender (same with the blender artists forum) and don’t know if this is the correct sub forum, so…

nevertheless, my question… I am looking for a free scene (could be small, maybe something is moving) which demonstrates what blender can achieve… I know big buck bunny, but I am looking for most photorealistic stuff what is possible with blender…

It would be good if it is for free… it should demonstrate the quality, so I don’t care about the topic of the scene or which models are used…

A simple photo is not enough, I need to render it live in blender.

Can someone help me?

Thx,
Vertex