Finer Things in Mac

If you have Spaces enabled and click and drag an app to the edge of your display, you will switch to that Space and drag the window with you. This works in both 10.5 Leopard and 10.6 Snow Leopard.

In Snow Leopard it is possible to switch Quick Look’s focus between windows in Exposé by either hovering the mouse over a different window or by using the arrow keys.

Hold the Shift key when launching Exposé, Spaces, Dashboard, minimizing a window into the Dock, or even when using a Dock Stack, and you will get a slow version of the feature’s animation.

The Spaces overview lets you enter All-Windows Exposé mode. You can enter Exposé, then invoke Spaces, or invoke Spaces and then enter Exposé.  Either way, you’ll be able to see all your windows.
If you grab a window in this Spaces+Exposé mode and move it to a different Space, there’s another treat: the window will retain its [...]

In Snow Leopard, when multiple monitors are connected, Spaces now adds a one pixel line between the separate displays. This makes the two desktops easier to distinguish than in Leopard, where no such line existed.

If you have multiple windows open in a single application, you can move them all to a new Space at once. Activate Spaces, then hold command while clicking on one of the app’s windows. Drag this window, and it will move all of that application’s windows in tandem, even if those windows are spread across [...]

In Leopard and Snow Leopard, you can easily move an app to a different virtual space by holding down the mouse button on the app’s border or title area, and then using Ctrl + number key to switch to a new Space and drag the app along with you.
Editor’s note: This will not work with [...]

When you switch Spaces in Leopard, a black 2×2 grid panel appears with one white panel that snaps in place to display which Space you switched to.
In Snow Leopard, that white panel now animates as it slides from one Space to the next.

Snow Leopard allows you to swap one Space with another, even with multiple displays.
While viewing your Spaces, you can click and hold on any blank desktop area to drag all the apps from one Space to another (click the image for a larger view). This even works with multiple displays, so you will effectively swap [...]