i think that lewis.tsurumaki.lewis has designed some for knoll...

check out their website

totally rad wallpaper based out of New Orleans- plus a portion of their proceeds go to the tipitina foundation.

Here some links:

varistyle
extrapete
colorflage
twenty2

why? do wall paper........

Don't get me started. I hate wallpaper...

I have to admit that I love it. I've been working on and off for months on a wallpaper homage to Gram Parsons featuring poppies, marijuana leaves and barbituates.

Thanks everyone for the recommendations. Not exactly what I am looking for but some of them are quite interesting. I am not into wallpaper in general but some of the patterns and colors could be quite intriguing and I especially like the retro and vintage look. I hope I could find my favorite ones to share.

sheesh,

timorous beasties
Cole & Son
kuboaa

There are more, search some design shows for exhibitors, for example the recent 100%Design in London.