Charles Martinet, best known as the voice of Mario, has joined Instagram. Of course, there are lots of people on Instagram, possibly even your dear ol' Granny. Of course, Granny probably isn't walking around with a bunch of Mario figurines and making silly videos (more power to her if she is, though).
After starting his account in mid-August, Martinet has already filled it with plenty of amusing clips, including Mario educating Luigi on the art of puns, Wario not understanding said puns and the two brothers being juggled by a Chilean street performer. We'd suggest you start with that one and work your way forward.
[Image: Charles Martinet]