Dr. Don Pettit performs a number of microgravity experiments while onboard the International Space Station. The simplicity of the experiments in addition to their ability to blow minds really excites me about all things relating to humans in space. Also - Tea featured at 23:45!
It was used in the Victorian times. If you had a particularly large moustache, you would rest the moustache on the little ledge bit inside the cup and drink through the hole to avoid getting your moustache wet.