One thing that I really miss from Tiger is having a shortcut on my Desktop to my network shared volumes, so I don't have to open a Finder window, click on share, and then select the machine or AirPort Extreme entry, and then the volume I want to access.
Leopard won't let you make an alias of a network shared volume, or create one by dragging it to your desktop. What I found out, however, is that you can drag a shared volume to the dock as a Stack folder, and there it is, a direct link to your shared volume. You have to drag it to the area next to the trash; it won't work in the applications zone of the dock.
It also helps when the Shared option won't even appear, and you don't remember the direct link to get to the volume through finder's Go » Connect to Server option. This happens quite often with AirPort Extreme, and now I just have to click the shortcut on the dock and it will come right up.
[robg adds: As noted in this hint, there seems to be either a bug or a feature in the new Finder: using Column view, you can make aliases from networked volumes via a drag to the desktop (or to the sidebar, as in the previous hint). Using other views, though, you cannot. I can only hope that this is a bug is in the 'other' views, and it's not something that's "fixed" in a future update by breaking the column view behavior! Regardless, putting the network share into the Dock as a Stack is an interesting trick.]

