I just saw this on Sunday. While I don't think my kids probably liked it as much as Nemo or Monsters Inc., I have to say it was pretty awesome. There is more grown up humor here. The first half of the movie is a commentary on the way we struggle with living "normal lives" and feel that we are settling. The main character feels the strain of not living out his dreams. When we got into the second half, it was all action. My kids started to like it there. Elastigirl and Dash in particular have really fun scenes.
One cool and interesting thing that I noticed. Violet is shy and she wears her hair in front of her face to hide herself and what's her super power? Invisibility!
I love everything Pixar has put out so I may have become biased, but I think this is a must see.