The Incrediables is...well, incrediable!
It was actually my second time (first time with NTG) and I almost never see a film twice in theatres.
I won't spoil the plot, but it's really a brilliant story written and directed by Brad Bird, who also did The Iron Giant (another great animated film).
It might be a little scary for really young kids (like under 7) but I'd highly recommend it for anyone.
As an FYI, you should know that a major chunk of the plot is suspecion over infedelity, but it's all implied, not shown.
If you're even considering seeing it, GO!