Instantly recalling understanding: Kevin Horsley at TEDxPretoria 

For the past 23 years, Kevin Horsley has been analysing the mind and memory and its capacity for brilliance. He is one of only a few people in the world to have received the title International Grandmaster of Memory. Kevin shares his amazing talent and teaches us the importance of strengthening your memory capabilities.
In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)