Some USB guns are fun, but some are used to strike fear in your cubicle-neighbor's heart. Here are 17 USB "weapons" made by geeks for geeks, from FAIL to fantastic.

Body modification covers anything from ear piercings to circumcisions, but there's a niche that involves the most extreme manipulation of the human body.

By now, we're all so used to seeing graffiti that we ignore it. But would you be able to ignore graffiti using a medium or a method you'd never seen before?

How many different ways can you upcycle an old dumpster? The Skip Conversions project turns them into swimming pools, skate ramps and more.

Chilean artist and designer Sebastian Errazuriz creates fantastical designs and urban art. His product designs and guerrilla art are original and amazing.

Graffiti comes in all shapes, sizes and styles. Most of us have seen different styles of graffiti, but how often do we really pay attention to the composition?

Performance art at its best is when the performers, their environment and the audience all interact. This amazing urban dance project accomplishes that and more.

While no one is sure why or how Stonehenge was built, our fascination with it is long-lasting. These replicas all pay homage to the original English enigma.

Whether using the streets as a blank canvas or masterminding 'interventions', these street artists help change the public perception of everyday urban life.

Propaganda, presented graphically as posters, pamphlets and pictorial artwork, aims to influence the attitudes of people to serve the purposes of the propagandists. Here are 13 examples of propaganda showing it at its best, worst and purest.

Continuing a perusal of hugely effective guerrilla marketing stunts

From massive bears to bridge-sized waterfalls, here are some of the most breathtaking and inspiring pieces of public art

Sometimes they are thought-provoking but many times they are merely funny - here are some signs you may see on the side of the road - and that might be side-splitting.

While necessarily incomplete, this collection gathers over 100 essential pieces that tell key stories about his aims, personality and history.

Light graffiti is uniquely ephemeral and inextricably intertwined with the art of photography, sometimes even invisible to the naked eye and apparent only on film.