Everyone is wading in with stories about how this has been a commercial flop for Disney. I saw it prior to the box office figures comings out and if you leave your brain at the door and settle back for some entertaining popcorn for the eyes then it is fine.
The script is as cheesy as hell in places but the story is fairly predictable but bowls along at a nicish pace (don't think about it too much) and you can tell that the director has a Pixar background because the alien dog is just brilliant.
There is plenty of eye candy for both sexes and I like to see a strong heroine who can handle herself and kick butt.
Good inoffensive fun and action at the end of a hard day when you don't want to think. Settle back with a beer/wine/popcorn/chocolate and ogle appropriately and I dare you not to fall in love with the alien dog.
It's getting 50% from me earning a lot of points for ogle-factor. On IMDB it has got 72% with a Metacritic score of 42% so bit of a mixed opinion there. On Rotten Tomatoes it has 51% from critics but 71% of visitors to the site rated it three and a half stars or above.