No guesses this has been inspired by Leopard OS X wallpaper but hey I use Windows, so here is 1 with a W:

‘W’ Aurora
Resolution: 2000×1250

w-aurora

W’ Cosmos
Resolution: 1920×1200

w-cosmos

I got quite a few requests to reduce the size of the ‘W’ and hence I did, presenting:

W’ Cosmos 2
Resolution: 1920×1200

w-cosmos-2

Peace :)