"Comeback" is an example of when the writers throw a bunch of stuff into an episode. There's Rachel's transition from wannabe social trendsetter to song writer, Sue's weird journey, Sam and Quinn drama, more of Puck chasing Lauren, and Justin Bieber. And in the end, there's no resolution that draws anything to a close.
The first half of the episode "Comeback" is a parody of the Justin Bieber phenomenon, girls swooning over a dorky haircut and generic pop songs for no apparent reason. Sure, it's out of character for most of the girls to go wild for Bieber, but isn't that what happens in real life? Personally, I got a kick out of it, and had to contain myself from bursting out in laughter during "Baby."
I know lots of people hate him and will be automatically turned off by anything related to him, so here's what I think: Justin Bieber is a product of genius marketing and perfect timing, when the internet can turn a nobody into a somebody. He's not particularly talented, good looking, or anything at all. He's definitely overrated by his fans, but he's not terrible either. If Glee wants to use his image and music, that's fine. Now that I think of it, we should be thankful the episode wasn't Justin Bieber exclusive as Glee has gone way, waaay overboard in the past.
Somehow, Sue is a part-coach for Oral Intensity now. Yep, with no experience heading a glee club, she's partially in charge of a team that is supposedly really good. But, hey, at least it makes more sense than Will and Sue randomly showing up at the hospital to sing to kids with cancer with zero follow-up.
Score: 8.2/10