This vid was pretty fitting for summing up the first 8 yrs, i must admit. And, the idea that Mata Nui was a giant robot came up in the very beginning has made me watch the movies again for any sort of hints. Apparently, in the Mask of Light, when Hahli tells the villagers that Mata Nui will be awakened, you can hearing in the murmuring, "He's a big machine!" What a hint.