If you tend to dabble with Portals/Portlets, and are not aware of the NetBeans Portal Pack Project, or not had a chance to take it for a spin yet, you may want to consider doing so.
The project got started a few months back and has made steady progress. It currently has plug-ins for developing JSR168 compliant Portlets, and some additional ones that allow direct deploy/undeploy to/from the Open Source Portlet Container implementation, as well as Sun's commercial grade Portal Server 7. The Portal Pack plug-ins recently got added to the NetBeans Auto-Update Center Beta as well.
Also related - if you need an easy-to-use, lightweight runtime to debug/test your portlets, you can use the Portal Pack plug-ins in conjunction with the Portlet Driver that is part of the Portlet Container Project. The Portlet Container and Driver are conveniently available via the Application Platform SDK Update 2 Release.