I used to use an Automator action for this, but Mac OS X Hints unearthed a sweet Snow Leopard shortcut for geeks: the ability to show or hide hidden "dot" files in any Open or Save As dialog. The magic combination to start imprinting into your fingers' muscle memory is Cmd+Shift+Period. Press it again to toggle the visibility. Hit the play button above to see what it does in my Mac's home directory.
One of the biggest stumbling blocks for Mac users who try out my Todo.txt CLI is finding and opening hidden "dot" configuration file (which is the standard Linux naming convention), so this will help me help them. Sadly this shortcut does not work when you're just browsing in Finder. [via DF]
On each new episode of This Week in Google (details) I'll highlight a tip for using cloud/Google apps smarter, faster, and better. I'll document those tips here.
The J and K keys navigate through lists of items in Gmail, Google Reader, and even Google search results--without getting the mouse involved, which saves you point-and-click time. J goes to the next item down the list, and K the previous. J and K aren't easy for your brain to remember, but they are for your fingers: most keyboards have a little nubbin on the J key, and if you're a touch typist, your right hand's forefinger rests on the J key. The J and K shortcuts move the cursor up and down in other (some old school) software too, like vim. Here's how to give your J and K keys a workout in Gmail, Google Reader, and even Google search results.