Benjamine Booth updated his simple recipe-style RCP tutorial for Eclipse 3.1M7. FYI, RCP is a platform for building Eclipse-based rich clients and Eclipse 3.1M7 is the first version of Eclipse 3.1 releases to make it relatively painfree to create RCPs. Before it was like laying dodo eggs which is a problem if you are not a dodo.
BTW, eRCP might interest you if you are into mobiles. eRCP is embedded version of RCP so that you can run java apps using SWT UI on mobile devices. Looks like Motorola is one of the sponsors behind this project.