AppShelf

AppShelf is a great replacement for the default PalmOS application launcher. At the bottom of the screen, you can choose 3 plugins from about a dozen available plugins. I use the datebook plugin, the screen capture plugin and the analog clock plugin. [Edit: Yes, I know. Plugin, plugin, plugin, plugin.]

AppShelf Home
Kelly Edwards excellent AppShelf Tutorial
My favorite AppShelf Discussion(at ClieSource)