The Growl Project has released Growl 2.1, adding the capability to run scripts as actions as well as control notifications via rules using AppleScript. (For more information on writing AppleScript for notifications, see this documentation page.) The system-wide notification utility also addresses a problem with hanging when receiving more than 100 notes at a time, enables use of styled close buttons on WebKit displays, localizes Automator actions, and displays notes on both computers when using forwarding with Notification Center forwarding. ($3.99 new from the Mac App Store, 6.8 MB)
Springy Dock Tricks
If you drag a file and hover over Dock icons, various useful things happen which are similar to Finder springing. If it's a window, the window un-minimizes from the Dock. If it's a stack, the corresponding folder in the Finder opens. If it's the Finder, it brings the Finder to the foreground and opens a window if one doesn't exist already. But the coolest (and most hidden) springing trick is if you hover over an application and press the Space bar, the application comes to the foreground. This is great for things like grabbing a file from somewhere to drop into a Mail composition window that's otherwise hidden. Grab the file you want, hover over the Mail icon, press the Space bar, and Mail comes to the front for you to drop the file into the compose window. Be sure that Spring-Loaded Folders and Windows is enabled in the Finder Preferences window.
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