Clooney is fantastic as Hawaiian native, attorney and self-described "back-up" parent. The movie deals with very difficult and emotional issues yet is laugh out funny throughout. The movie was directed and written by Alexander Payne (Sideways, Election). Fun fact, Payne is one of very few directors who has final cut over his films.
The movie was filmed on location in Hawaii and is beautiful. Much of the movie takes place in Oahu. I was lucky enough to stay on Oahu for two weeks the summer before my senior year of high school. I was also lucky enough to really experience Hawaiian life by staying at the home of my friend's grandfather, not at a resort, not in Honolulu or Waikiki. My tourist-y activities were limited, and wonderfully, to one day. The culture as portrayed in the movie is strikingly accurate.
An excellent, excellent movie all around.