You may know that Quick Look supports video, but did you know that:
If you open a video in Quick Look and then close the Quick Look window, as long as you don't open anything else in Quick Look, re-opening the video in Quick Look will resume where you left off.
You can select and open multiple videos in Quick Look at once. This basically sets up a video playlist, and the same resume feature applies to these videos. Jump back and forth between the videos, and Quick Look will remember where you were in each!
[robg adds: It's just too bad they took away the full QuickTime controls in both Quick Look and the Finder's Preview column, as you can't fast forward, rewind, or control the volume (other than mute).]
When transferring directories between my Linux desktop and Mac OS X Laptop as tar.gz archives, I often run into the problem that the unpacked files on the OS X system won't show up in the Finder -- not even when I restart the Finder (this happens at least on 10.3).
Apparently the problem is caused by some sort of issue with the .DS_Store file. Removing the .DS_Store file (only possible from the Terminal) lets the files eventually appear in Finder.
While you're in Quick Look full screen mode, Command-Tab to another application and then Command-Tab back to Finder. You'll now find that you can navigate your folder using the arrow keys in full screen mode (as you can when not in full screen mode), without the need to select multiple files first.
Leopard's Finder Get Info panel now has a proxy icon on the panel's title bar. It can be dragged like the proxy icon in a Finder window title bar, and behaves in the same manner. Dragging while holding Option-Command will create an alias. Dragging while holding Option will copy the file if the destination is on the same volume. Just dragging to a destination on the same volume will move the file.
[robg adds: You can also Control- or Command-click on the proxy icon to see the path to the chosen item. Select a spot in the path, and the Finder will open a new window showing that directory.]
Here's a great hint for changing all instances of one filename (or part thereof) to another throughout the entire hard drive in one fell swoop.
Firest, you'll need some sort of renaming utility that can work within Finder windows; I use a simple one called File List. Now here's the trick. Create a find for the filename, as this will open a window containing all instance from every folder no matter how deep. File List will operate on all files within this find window, changing or serializing or whatever, without moving the files.
This is especially great for projects which may use acronyms but be messed up with proper project names...
[robg adds: This should work in both 10.4 and 10.5.]
I was heartbroken when I discovered a Stack was nothing more than a spiffed-down image of an existing folder, and I was even more irritated when I discovered you couldn't just drag a bunch of files to make a new Stack. I couldn't do much about the look, but I could at least make something that acted as I expected Stacks to: A convenient Dock icon that sits patiently waiting for a collection of files, and then magically turns them into a brand new Stack.
It's a simple AppleScript that took way too long for my Perl-sized brain to write, but it seems to work. There's a compiled version [76KB download], and source is available (original site • Hints mirror).
Place the AppleScript app in your dock, then select a few files in your Finder and drag them to the icon. It will ask you for a label (a default label is generated according to the current date and time), and then it will magically add the new Stack and (perhaps annoyingly) reload the Dock.
[robg adds: The script works by moving the files you drop on it. If you'd rather create aliases instead, there are instructions in the source on two simple edits to make to have it do so. I haven't tested this one, but a comment on the queue review site notes that if you use aliases, the error checking for duplicate files no longer works. And as the author notes, use this at your own risk, as it modifies your dock.plist file to do its magic.]
When viewing a multi-page document in Column View mode, if you hover over the preview icon, you'll see two arrows that let you click through the pages that make up the document. It is not a full scale preview as in Quick Look, but as I use column view most often to navigate, I find this very useful.
[robg adds: This also works with the preview icon in Get Info/Inspector windows, though I found that only worked with PDF files, not text or Word documents.]
I searched this site as well as the "300 new features" on Apple.com before submitting and couldn't find this in either place. It seems kind of a "DUH!" feature, but still blew me away as one of the handiest things ever, especially for designers and font freaks.
In column view, select any font file (I tested TTF, OpenType, and both screen and printer Postscript fonts), and flip down the preview triangle to see a preview of the font in Uppercase A-Z, Lowercase A-Z, and numbers. In icon view, list view, and the small icon of column view, the font icon shows "Ag" in the corresponding font (I guess that means this is a 'Silver' medal hint. Hehe.)
Cover Flow view flips through larger "Ag" previews, and Quick Look shows a big Alphabet preview. Thanks Apple! It's the little touches like these that make me a 20-year Mac fan.
[robg adds: As expected, you can also see this in the preview icon in the Inspector/Get Info windows.]
In all OS X incarnations prior to Leopard, the Finder Sidebar items could only be removed or reordered. Attempting to use them as proxy icons only resulted in them poofing to oblivion. No more in Mac OS X v. 10.5!
Option-Drag on a Finder Sidebar item to copy it, and Command-Option-Drag it to create an alias. This works for the desktop, other Finder windows, and other Finder Sidebar items. You can't, however, Command-Drag to move Finder Sidebar items to a new location...yet?
I haven't seen this mentioned anywhere. While not really a hit, it is a cool new addition to Leopard.
If you move a hard drive icon to a specific location on the desktop -- even on a second screen -- the Finder will leave it there, even after a reboot! This is something that has bugged me forever, and now it's been fixed.