Create Reminders using Alfred. Gianni Rondini has put together a nice Alfred extension that, by using AppleScript support in Reminders, adds new items with a very simple syntax. Obviously, the extension will launch Reminders.app if it's not open, as the app needs to be running to receive AppleScript commands. Download it here.
Customize the dialog that asks for access to a user's contacts. As pointed out by Daniel Jalkut, there's an easy way for developers to customize the information displayed in the new dialog that asks for permission to access your contacts. Third-party apps that need to look-up your contacts even for mundane tasks like auto-fill can take advantage of this (otherwise, the dialog will be generic, with no additional details provided to the user).
Michael Tsai's Mountain Lion notes. Good collection of miscellaneous links and information here. I agree with Michael's comments on the Safari address bar, but I still can't stand how Google Search URLs aren't copied to the clipboard (as I noted in my review, search terms are).
The story of the new Zebra wallpaper. Directly by photographer Steve Bloom.
Enable backspace navigation in Safari. Use this Terminal command to be able to navigate in history using the backspace key. I have my MacBook Air set to navigate using three-finger swipes, as well as backspace.
On Mountain Lion's iCloud filesystem. iA's Oliver Reichenstein takes a look at the structure of iCloud files and folders under Mountain Lion. Their text editing app, iA Writer, has recently implemented support for folders in the iCloud Document Library across Mac and iOS.
Ars Technica's review of Mountain Lion Server. Good overview by Matt Cunningham.
Mountain Lion and the Simplification of OS X. Shawn Blanc explains why the interplay of iOS and OS X goes beyond mere graphical resemblances.
Virtual Hosts and Web Sharing in Mountain Lion. A guide on how to bring back a local hosting environment by Brett Terpstra.
Get Back "Save As..." menu. Yet another trick to get back "Save As.." in Mountain Lion.
For more Mountain Lion coverage, visit our hub.