I was very disappointed by Juno.
I was really looking forward to it, but I found it far too self-consciously cool and clever. The music irritated me, and the lo-fi visual style was contrived. The dialogue was fine in parts, but stilted and cringeworthy in others. I felt that it lacked an honesty that I've seen in other films of this genre.
Having said that, I found it enjoyable enough. I didn't laugh once, but I smiled quite a few times. I just think that it's an overrated film and encapsulates much of what annoys me about pop culture in this decade.