Marlin is a single parent Clownfish, his son Nemo was born with a bad fin after his egg was attacked by a Barracuda. After losing his wife and all but one child, Marlin becomes the over-protective parent, even more so when Nemo is born with his bad fin. When Nemo is taken by divers on his first day of school, Marlin sets out to find his son. On the way he meets Dory, the Blue Tang fish with a severe short term memory problem.
Finding Nemo is a beautiful film, not only creatively (the animation is amazing, you really feel like you're under the sea)but the characters are actually quite easy to relate to (especially if you're a parent). The adults actually enjoy the film much more than the kids (My Dad, Uncle, Aunt and Grandparents all huddled round the television set when it first came out on DVD, while us kids went and played games).
If you're going to take anything away from this movie, it's that you should cherish the time with your children, instead of just keeping them safe (I'm not saying not keep them safe, what I mean is that as well as keeping them safe, have fun with your children).
One more home run for Pixar!