Amazing dashed lines A compilation of Professor Walter Lewins and some of his lectures at Massachusetts Institute of Technology (WITH). He draws some of the best lines, especially dashed lines - so fast that his hand isn't even moving up and down to produce the dashes.
A good road safety video Good little prevention video which reminds us that driving very fast in a car, to the point of speeding, hardly saves any time.
The dent on the head of streamers In this compilation, several streamers notice that they have a dent on their head. By wearing the headphones on the head for too long, the headband pushes into the scalp on the top of the head and forms a bump. But don't worry, it's not permanent, everything returns to normal after a while.