Speedcubing is absolutely fascinating to watch. Here is a video of Felix Zemdegs solving a cube in 4.22 seconds (2018 world record holder).
Speedcubing is a crazy sport. There are more puzzles than just the classic Rubik's cube 3x3. There are 2x2 and 7x7. There are events to solve it blindfolded and with your feet. There are competitions in which you try to solve in the least amount of moves.
How do I know so much about this? My son is a competitive speedcuber!