Source : AppleSome interesting Leopard hidden gems, as seen on Apple's new page dedicated to the next big cat
Address Book
Google Map Addresses: View a detailed map of any address in Address Book.
Synchronize with Yahoo!
Automator
UI Recording and Playback: Use a new action called Watch Me Do that lets you record a user action and replay as an action in a workflow.
Workflow Looping: Repeat a workflow for a specified number of times or a specified time duration
Desktop
Spring-Loaded Dock: Just drag a file, hover over any application in the Dock, and press the Space bar the application opens instantly.
Finder
New folder options: Adjust the grid spacing.
Font Book
Printable Font Book.
Font Auto-Activation.
FrontRow
