Ocean's Twelve was absolutely brilliant, but you need to be pretty mature and have at least some measure of class to enjoy it.

Rating: 10/10 (4 February 2005)

That pretty much explains all the bad reviews it gets: these are all written by 14 year olds who sit in their basements all day long online. This movie is a classic, and though it could be argued that it doesn't match up to Ocean's Eleven, you could retort just as easily that Ocean's Eleven is decades-old classic and Ocean's Twelve was written recently.
This film is clean: no gore, cussing, sexuality/nudity, or drug use. It does have plenty of characters though, and these serve to spice the plot up all the way to the end.
The plot is brilliant, and everything that happens, does so for a reason. Those who complain about plot holes need to realize that J.R.R. Tolkien, the greatest author of the 20th century, did not write without plot holes. I find it strange that these people will criticize a storyline that they could never write the equal of AND the acting that they could never pull off, while still complaining that the movie was too slow-paced and was boring. Perhaps they'd prefer the Star Wars prequels. Oh wait, they complained about those as well, for just the opposite! It appears that there is no pleasing them! With that in mind, ignore the critics, and recognize a masterpiece when you see it.
The subtle humor and classic characters in this are just brilliant. Daniel Ocean and "Rusty" Ryan, played by George Clooney and Brad Pitt, both good-looking and talented actors, are just complete geniuses. The conversations they have maintain the hilarity of the the predecessor film, and they are just a joy to watch. Also with new characters such as a detective played by Catherine Zeta-Jones and a mysterious rival thief known as the Nightfox, this movie is every bit as brilliant as the first.
Indulge yourself. Watch this movie in theaters, making sure to have plenty of delicious popcorn and refreshing Coca-Cola, and then rent it once it comes out, and then by the DVD for good measure. You won't regret it.