You've maybe already seen some “best of” billboard posts. But this is the best of the best.
Image may be NSFW.
Clik here to view.
Denver Water, through their ad agency Sukle, has produced many good billboards.
This is my favorite.
Image may be NSFW.
Clik here to view.
Vancouver's Science World, through their ad agency Rethink, has also produced much good advertising.
This gold billboard is really a gold billboard.
Image may be NSFW.
Clik here to view.
This is a real billboard stunt that was put up near a busy intersection in Auckland, NZ.
Ad agency: Saatchi & Saatchi.
Image may be NSFW.
Clik here to view.
Well-placed board won a bronze lion at Cannes in 2009. That's the Haitong Securities building in Shanghai, fairly famous in the architectural world for its unique wave design. Created by Firstell Communications.