Boards
Street murals in London (or elsewhere)
Got any favourites?
I like the river one in Brixton:
http://www.flickr.com/photos/plasmatika/2482225633/
And this one in Deptford, although it looks better at night because the sky matches the dark blue wall and it looks like some kind of MC Escher headfuck:
http://www.flickr.com/photos/bryans_d80/3394886482/
any more?