I have recently updated the SimpleActions plugin to run with IDEA 6. Also, there is a new action to hide all bottom tool windows (ShiftAltF12). The plugin is now bundled with the PluginErrorReportSubmitter so any exceptions can be reported to me right from within IDEA.
- hide all bottom tool windows, press ShiftAltF12 (or choose 'Hide Bottom Tool Windows' from Window menu)
- highlight method implementations, press CtrlAltShift+F7 on any interface or class reference that the current class implements or extends
- copy Class.Method(ParameterTypes) to clipboard, press CtrlAltShift+M on any method