Tim Sneath posted quite a valuable collection tips & tricks for the Windows 7 Beta users. Some of these tips existed even before Win 7. Definitely worth checking out.

http://blogs.msdn.com/tims/archive/2009/01/12/the-bumper-list-of-windows-7-secrets.aspx

I am pasting my favorite (keyboard shortcuts, what a surprise!!!) below:

Windows Management. By now, you’ve probably seen that Windows 7 does a lot to make window management easier: you can “dock” a window to the left or right half of the screen by simply dragging it to the edge; similarly, you can drag the window to the top of the screen to maximize it, and double-click the window top / bottom border to maximize it vertically with the same horizontal width. What you might not know is that all these actions are also available with keyboard shortcuts:

• Win+Left Arrow and Win+Right Arrow dock;
• Win+Up Arrow and Win+Down Arrow maximizes and restores / minimizes;
• Win+Shift+Up Arrow and Win+Shift+Down Arrow maximizes and restores the vertical size.

This side-by-side docking feature is particularly invaluable on widescreen monitors – it makes the old Windows way of shift-clicking on two items in the taskbar and then using the context menu to arrange them feel really painful.