I just downloaded and installed the Avalon-based the New York Times reader.
This is one nice Avalon application, it distinguishes itself from all the samples that I have seen because it lacks a video playing in the background, and the buttons have not been rotated 30 degrees. It is one cute application, and I might have to eat my own words if someone from the New York Times developer team starts raving about their experience.
Robert O'Callahan from Novell weighs in on this subject, and offers a few alternatives on how things could be improved on the web world.
Of course, the real solution is for someone to implement an open source Avalon stack to run on top of Mono. No applause, just throw money.