Noble Space Savage

In essence, the Science Fiction equivalent of the Noble Savage. The Noble Space Savage is, in its most literal form, aliens who epitomize the stereotypical virtues of the Earth-based primitive: wholeness with nature, ancient wisdom forgotten by modern man, and pragmatic but gentle philosophy.

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Live Action TV

 * The Stargate franchise is absolutely huge on the Noble Space Savage, almost too many examples to count. The Stargate galaxy is chocked full of neo-primitive human tribes, many of which -- though not all -- live in some way harmoniously with nature, and some of whom have experience with or even utilize technology without losing their "natural" wisdom.
 * Star Trek has a long history of using the Space Savage, although typically in a cautionary role that makes a statement about people with power abusing those who are less fortunate or advanced than themselves.

Film

 * The Na'vi in Avatar.
 * Star Wars has the Togruta.