Apple has released a developer preview of OS X 10.8 Mountain Lion and, among the many other clearly iPad- and iPhone-inspired features will be a new Reminders app that synchronizes across your Mac and iOS X.
Now nothing slips your mind. When you have so much to do, Reminders helps you get it done. It’s all in a list. More than one, in fact. Make as many lists as you need and easily add to them. Set due dates and you’ll get alerts as deadlines approach. Check items off your lists as you go and keep track of what you’ve completed. And to be sure you don’t forget anything, iCloud keeps your reminders up to date on your Mac, iPad, iPhone, and iPod touch.
Apple previously allowed Reminders to be synced to the Mac using iCal on OS X 10.7 Lion, but that proved to be somewhat finicky and didn't reflect the user-experience or interface of its iPad or iPhone counterparts. With the update to Lion and the official Reminders app, the experience will be completely fluid and sync via iCloud using your Apple ID.
I'm personally going to love this added feature in OS X Mountain Lion, as I made the decision not to use Reminders on iOS due to the stark differences in how it worked on the desktop. Now that the experience will be the same across all of my Apple devices, this should be much better for Apple users.