RE: In what kind of (YouTube) videos are you interested?
Some reasons to why I would watch something:
# The person commentating - I watch a lot of day9 videos
# High resolution/good quality videos of the newest/upcoming games - To see graphical stuff
# Instructional videos - people who are good at what they do
RE: In what kind of (YouTube) videos are you interested?
The extent of my interests on The YouTube are:
-Gaming Commentators (a very select few, less than 3)
-Retro Gaming Commentators (the number of slender/happy wheels/mine-craft/amnesia LPs is absurd)
-Comedic stuff of any kind
-KotD (look it up, pretty awesome)
-Music (primarily piano/acoustic guitar, but all genres/styles are accepted)
To answer your more specific questions:
I watch a video in its entirety almost solely depending on the commentator (the gameplay/game itself hold very little importance to me).
RE: In what kind of (YouTube) videos are you interested?
In terms of gaming, I like those that are honest and well made. I also like to see some unknown and obscure games, probably why I like Cry and Northernlion a lot.
I also like to watch videos that are outside the box and take on a new formular of creating content.