The King (2005)
There is no shortage of good performances (I enjoyed watching the sweet Pell James and the beautiful Laura Harring, but none was nearly as good as Paul Dano). That and a strange and unpredictable (and often edgy) script, as well as the excellent direction (check for example the long shot near the end) makes for a very good watch.
It would have been nice if the villainous behavior of one of the characters was explained, or the ending not leave me speculating.