I have always seen that many of the GUI programs have command line parameters for startup. I found this cool two parameters that are very useful when working in offline mode for Outlook.
Starts Outlook without checking mail at startup.
Starts Outlook with the Reading Pane off.
These are wondeful because esp when I am at the airport etc and opening outlook I generally dont want to have the readning pane and dont want to automatically TRY to connect to server for updates. These two options are cool !!!