Big time !SPOILERS! (stop looking, and reading if you haven't seen the finale!)
The ending may have been sad but...I'm just saying... no one else knew about his fakeness on his face, not even his man servant, Goggles McShock-stick.
Also someone made me laugh so hard yesterday about how the McShock-Sticks are the lands most prestigious bakers haha made me smile
If you cant guess I loved the finale, loved it! Amon might be my new favorite character in Avatar... next to Toph and Iroh. The way they handled there end was sooo Cowboy Bebop. But if you haven't seen it and your still reading go watch it now!
Also I'm at Anime Expo in LA this weekend at B37 and B38 so stop by. (Ill post up a journal too)
They should have revealed who Amon was 3 episodes prior to the end, least that way they could have given the audience some time to relate to him as a villain.
So far Amon didn't particularly strike me as a strong villain, just charismatic. If he really did believe in his ideals, he should have scarred his own face, it shows his willingness to go the distance to eradicate the world of benders.