I guess I wasn’t paying attention to the Leopard previews earlier in the year, because OS X just blew my mind.
I was editing an e-mail message, and decided to idly click on Time Machine to see what it was doing. Instead of the Finder going into Time Machine mode, my e-mail went into time machine mode. I clicked the back arrow a couple of times, and there was what my e-mail inbox looked like 2 days ago, complete with since deleted messages.
It’s the same with the Address Book. You can step back through how your address book looked at different moments in the past.
My general impression of Leopard is that it’s good. Proper multi-threading in Finder and Mail makes a big difference. But this Time Machine thing is the most amazing backup tool ever. I got a big hard disk at Costco at the weekend, and backing up is now totally painless, there isn’t even an application to run. You just have to make sure a suitable disk is plugged in for long enough to copy the changes over, once a day or so.
Backing up isn’t sexy and it isn’t fun, which is why most people don’t bother to do it. Now there’s no excuse to skip backing up. Or at least, not if you’re a Mac user.