I enjoyed Merlin Mann's video tour of his Mac computer desktop.
He shows how he uses Path Finder (a Finder replacement), and stuff in his menu bar, such as Google notifier, Dropbox ("a better replacement for iDisk"), Skitch (a screen capture program), Hazel ("a preference pane that watches folders for you and then does stuff based on conditions"), Fuzzy Clock (it'll say "ten to eleven" instead of "10:49"), Evernote (superpowerful note taking and all around capture tool with OCR), Spirited Away ("anything on your desktop you don't want to see, it'll move it out of the way"), BusySync (lets you share iCal calenders with other people and Google Calendar), SoundSource (sets audio configurations), and MobileMe ("I shut off as much as I possibly can.")
