Disregarding the adorable 90's fanboy undertones and noise: I love this thread.
The linked Falcon demos are awesome. To me Falcon was always this obscure, powerful Atari machine that never caught wind. I didn't quite grasp how fast it actually was.
I'm also aching for good AGA 020/030 demos. So far I just have a random bunch as WHD slaves, a lot of which are forgettable and unimaginative. Some very good ones here.