If you ever want to select all but one playlist (or movie, podcast, app, etc.) to sync in your iPod or iPhone's iTunes dashboard, it seems you have to select every single one manually.
It turns out there's an easier way: just Option-click on any entry in the list. This will toggle the state of all items in the list between 'selected' and 'not selected.' Then you can just change the few you don't want (or do want), and sync.





An interesting change in Leopard was the addition of Data Detectors to Mail, which automatically detect info such as dates, times, names, and addresses, and let you use that data directly from the message in iCal. It can be a very convenient feature, but some users find it annoying. To disable it, quit Mail, and in Terminal, simply enter:

