As in title above, why are Mato Jelic's Youtube chess videos so popular? I like them a lot, but I must confess that I am a bit surprised (not unhappy, just surprised), to see nearly millions of views for them...
Lots of possible reasons why people like him, here are a few:
1. His videos are on interesting games that people want to see analyzed.
2. He has a lot of great insight, including other possible moves that could have been played.
3. He adds humanity to chess by sometimes telling personal stories: including how he got into chess.
4. His voice is calming.