DZone has released a Seam UI Refcard which covers the most commonly used UI annotations and XML elements as of Seam 2.1. In particular, the Refcard contains information on simplifying JSF, page Navigation, JSF Component Annotations, JSF Component Tags, Hot Tips, and More.
The Refcard can be downloaded at: http://refcardz.dzone.com/refcardz/seam-ui?oid=hom8116
(Note: You'll need to fill out a short registration form prior to downloading the Refcard)
DZone has also posted an interview with the author,