I've created a website powered by K2. The address is: www.jumil.com.br/english
Under the menu Products you can see K2 running, I changed all K2 files (of course template files).

I used most of the features, All videos, SIG. I wanted to use the attachments but it was not possible, because the the client didn't want upload everything again, so would be a nice feature the attachment feature we can add just an link address.

This is a link with a complete look: www.jumil.com.br/english/products/growing-fertilization/item/4-cultimax

This is an category layout, simple and nice: www.jumil.com.br/english/products/livestock

If you want to know how I did it or want to see the code just ask me here, the I can attache the files.

Thanks a lot for this wonderful tool, it is awesome.