And you thought the matrix was fiction? Robots designed to access hostile areas such as radioactive areas are also used beneath the streets to clean or repair sewers or to lay cables. They were among the first things on the scene after 911 or Katrina and have a particular rugged beauty. Vote for your faves.

Five of so architects have produced much of the most famous modern furniture. Here are 15 different chairs by 15 different famous modern architects. Vote for your faves.

Some people take paintball very seriously, and the boundary between harmless fun, unintentional irony and plain creepy is blurred. Here are paintball teams that look like outright militia, and some are. They include a church team in full combat gear a German group that re-enacts LAPD swat team offensives, and three very disturbing teams: a Japanese paintball re-enactment of the Yugoslav civil war complete with Serbian militia uniforms; an US vs Iraq shoot em up in Jordan and a sinister third Reich Team with Eagle T-shirts. Vote them down.

Custom machinery designed for harvesting vast amounts of produce very quickly, has a particularly hellish quality. This list shows the variety of designs around a common theme, each for gathering a different product: carrots; beans; spinach; coffee; lettuce; cranberries; grapes etc. But then then there are our special favorites such as the worm harvester or the machines that eat trees, including a video of the infamous spider-like walking tree harvester.

A gallery of products using radioactive materials.Because radiation was seen to be new and powerful, at the beginning of the 20th century radioactive material was used in products such as face creams, mineral water and medicine, by equating power with rejuvenation. For similar reasons it was even used in items from spark plugs to condoms. Although many of these items are from an age when the dangers of radiation were not known, radiation is obviously useful as a healing tool for cancer therapy, but it is still used in legal Chinese remedies, which are respected more because of their age rather than efficacy and quack homeopathic medicines which are tolerated while unproven, because they are harmless water.Vote on your fave examples.