I frequently post insane SethBling-constructed redstone wizardry on the front page, but today is a day for new faces, and new creations! Specficially, IJAMinecraft, and his sorcery-level command block trick to give players (and even some mobs) crazy new weapons! This sounds like a ludicrious claim, but you can try it for yourself - one command block using his supplied input, and you have a firework-explosive bow, invincibility boots, even squid bombs, and more!
Not convinced after seeing it? Copy the command code, and try it yourself!