I like the full screen mode that apps can run in on Mac OS X Lion, but if you are just now experimenting with this new feature you may feel a little lost. The reason you might feel lost is because while apps run in full screen mode a lot of navigations elements are missing. Today you’ll find out that they aren’t missing just hiding.
If you want to use the Finder Dock while an app is running in full screen mode simply drag the mouse pointer to the bottom of the screen (default Dock location) or whatever side happens to hold your Dock. As you move the mouse pointer in that direction push in that direction as though you are trying to go past the edge of your display. After a brief pause the Dock will appear and work just like you would expect it too.
If you move the mouse pointer past the top of your screen you’ll see your apps menus and in the upper right corner a button that will allow you to turn off full screen mode for that particular app.