Personally, I really loved the movie! There were a lot of funny parts, and even though the bonding between Gru and the girls was very predictable, it was still believable and even touching in a few scenes. I also thought the animation and designs were really good.
I was expecting to be annoyed by the minions, since I worried they would dectract from the story, but that luckily never happened, and they did add a lot of humor to the film. I was also glad that the 3 girl never acted too cute.
I will say this though: I saw it in 2D, and the end credits scene looks really stupid in that format. I do agree that the teaser/prologue scene felt out of place in the final movie.
I give it 4 stars out of 5. I hope Illumination Entertainment can keep up this level of quality on their future projects.