Foreign Office

Even though most people won't notice or even realize it is there, Foreign Office created some amazing and subtle media content for the film Children of Men. From government propaganda to GAP-like animal fashion to outrageous drug ads, FO have created some pretty cool spots that don't seem that far off from the direction of advertising in the future.
Guerilla Amnesty International

I am so used to getting the same safe Amnesty International pieces in my mail that these guerilla advertisements really surprised me. This is the kind of thing that people really notice and doesn't get done enough. Check them out at Wooster.
LED Throwies
Take a break from the usual spray paint and try LED Throwies. Using LED's, magnets, lithium batteries and tape you can make your mark last up to 2 weeks (depending on weather). Check out this video by the Graffiti Research Lab of them in action. If I get a chance i'll make a few of these and post a quick video. [via Make:blog]
