A few walls from Noneck (formerly known as Peok) and Keim in Czech Republic.
formerly known as Peok
27 year old man arrested in Granada (spain) for stealing Space Invader tiles in Paris. (source)
Diagonal lines, black and blue shades by Seikon in Jaffa, Israel.
2 loooong walls by SLAK from Russia. Direct links to the hi-res pix: 2012 wall + 2011 wall.