[Crazy Jetty]

Yeah, he was *definately* close to Aang. He had to be. And While I was getting the snece out of the last episode that Tenzen and Lin know Amon personally, rewatching the episode before it, I'm absolutely positive they do.

If we find out that Tenzin actually knows how to spiritbend (And I'm almost willing to make a bet that he does, now), then that'll give more support to my theory. Because I could see Aang teaching his children how to do it. But not anyone else.

Either way, I'm certain that Amon either killed Aang, or is indirectly responcible for his death.