For freshers week, my university christian union ran an open mic night so I did an act (well two acts actually) involving speedcubing, I solved a few cubes and then while the next act took place I did my blind memorization so that around an hour later I could be called back up to solve it blindfolded! I am very pleased that I did get a success on that blind attempt, it would be pretty embarassing if it was not solved! Obviously someone had to be pranked at the end though...