Interview with the creator of the Na'vi language

Fictional languages are by far the largest group of artistic languages. Fictional languages are intended to be the languages of a fictional world, and are often designd with the intent of giving more depth and an appearance of plausibility to the fictional worlds with which they are associated, and to have their characters communicate in a fashion which is both alien and dislocated.

An interview with Paul Frommer, Alien Language Creator for Avatar