From the highest dunk of a biscuit into a cup of tea by a bungee jumper to the most magic tricks performed during a skydive, the adventurous and imaginative marked Guinness World Records Day on Thursday with all sorts of feats. Over the next 24 hours, more than 600,000 people worldwide will try to enter the history books in the most original, daring, and wacky way possible. Here's a look at some of the year's best.