Just figured this out and I don't remember seeing it anywhere.
If you have multiple Macs networked, and you constantly go to a particular folder on one of the remote Macs (say the desktop on the PowerMac downstairs), AND you're tired of being disconnected from each other when the iBook goes to sleep, AND you're tired of having to go through all the steps to log back on... this tip is for you!
After logging into the remote Mac, open a Finder window and select the folder you wish. Drag that folder to the shelf in that window (the place where Computer, Home, etc. is) and wait about three seconds. Surprise! The icons start moving so you can put the folder there.
Now, eject the remote volume and watch what happens to the folder icon (it turns into a "?"). Click on it and wait a few seconds ... no login, no "what volume do you want to mount", nothing ... nothing but the volume re-appearing on the desktop and the contents of the folder displayed, and hours of you life gained back every year.
[Editor's note: This is a creative use of the toolbar, and it allows you to open remote folers in icon, list or column view, as long as you have the toolbar visible. In order for the "no passwords" option to work, though, I believe you need to go to the "Options" dialog box and add the password to your keychain. At least, that's what I had to do to make it work without the password prompt.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20011230012834761