Nick Heudecker, a long time Wicket fan, has written an introductory article about Wicket for TheServerSide. I had the pleasure to read it in advance and I liked it. You should read the article yourself, and comment on the article, or Wicket at TheServerSide forum.
A Wicket Diary
Ramblings on Java, Wicket, cats and other stuff
I followed for a long time the Apache Cocoon project.
Developing Forms became a nightmare with Flowscript and all the Transformers an Generators.
Cocoon 3 started the cooperation with Wicket.
Frustrated by the integration of Dojo I examined Wicket and I was surprised how easy
Form development could be and how adaptable it is.
After 2 weeks of experience I read your article, and found my way would have been less sony when I had encountered it at the beginning.