Apple Remote Desktop has received updates to both the Apple Remote Desktop Client software (enabled in the Sharing pane of System Preferences) and the Apple Remote Desktop Admin application that's used to control and administer remote Macs. Most of the fixes that Apple details in the 3.3.2 updates are fairly minor, addressing incorrect reporting, improving performance when clients are controlled by RealVNC viewers, and dealing better with clients behind NAT gateways. Reliability has also been improved in a variety of situations, such as when copying via drag-and-drop (something that's always been flaky); when authenticating new client computers; and when controlling systems with dual graphics processors, dual displays, or that are using certain resolutions. ($299 new, free update, 4.21 MB client/51.41 MB admin)
Option-click to Hide Apps Quickly
This trick has been available in the Mac OS for years, but many people still don't know it. If you have too many windows cluttering up your screen, you can hide specific ones easily as you work. When you're in any application, hold down the Option key and click on another app's window, on the Dock, or in the Finder to switch to that other app and simultaneously hide all the windows in the previously current app.