I don't like the cutesy term for analysis as "The old analysis machine" or the skits they sometimes do in front of videos, and really dislike their cartoon avatars because they look so smug.
Otherwise they seem like good people and I generally enjoy their content.
Also they have a really bad habit of yelling into microphones, which is terrible if anyone wears headphones. I swear my right ear is still ringing from a Mega Man video they did last week where one of them got overexcited
So in other words, you don't like fun :P
I actually appreciate the generally playful attitude from GameXplain's crew as it balances out the depth of their content.
When you have a lot of information parse through, it's a lot easier to do so if it's presented in a way that engages both the left and right sides of the brain :)