PS For other keyboard shortcuts I've shared, going beyond things related to CF, check out the category/tag on the topic at my other (older) blog, tipicalcharlie.com: http://www.tipicalcharlie.com/tags/?/keyboard%2Bshortcuts (domain gone, page recovered from Archive.org)
PPS The entry above on ctrl-f6 is just one more point to be made about looking at Eclipse as a whole when using either CFE or FD. Don't just focus on what those plug-ins add, but rather also on the built-in features of the Eclipse interface which may help you with day-to-day functionality.
Update: Since writing this in 2006, note the several comments below where people offered still more. And of course since then CFBuilder has come out, and with its built-in Aptana offers still more of them. Indeed, in a talk I did on hidden gems, I list other shortcuts for switching windows.