- Tweet-Tweet-Tweet
Transmit - The best FTP client
Sparrow - Mini email client
Dropbox - File storage/sync in the cloud
Remind Me Later - The fastest way to create new iCal events
TextExpander - Save clicks with text snippet expansion
Apptivate - Application launcher
Camouflage - Hide the icons on your desktop
Calendar - View a mini calendar, complete with iCal events
Built-in stuff - Clock, Volume, Time Machine, Spotlight
(From James Dempsey, owner/author of The Graphic Mac)