I was just thinking about the soul-transfer scene at the end of the movie, but before I mention what I thought, I have to ask about something:
How did Jake get both of his bodies to the Tree of Souls? I imagine he first brought his avatar body to its base by himself, then left it and came back into his human body (at Hellsgate, I'm assuming). But what then? Was there a remaining human who could have flown him over to the tree via Samson? Was he brought over on the back of an ikran? And then once there, he must have been carried by one or more Na'vi to the base of the tree, unless he decided to roll his wheelchair through the crowd

.
And then (this is what I was thinking of) how surreal it must have been, to know that he was taking his very last journey in the body he was born with, to look down at his hands and know that they would never feel anything again, to realize that he would never see with the same eyes, listen with the same ears, etc. If I was in that situation, I would feel like I was about to die, knowing that I would be leaving the vessel I grew up in behind me forever. I'd try to capture every last moment and thought happening with and in my body. But then in this context I'd know that I'd be reborn again and I wouldn't feel dead at all. Or maybe I'd feel like I'd entered the afterlife, and it just looks the same as before, only now the need for a wheelchair is completely gone.
Don't know if I'm making any sense here, but the main thing I'm trying to say is how surreal Jake's final moments as a human must have been, though he was probably far more excited about entering his avatar body permanently than he was concerned with saying a solemn goodbye to his paraplegic human body.