Working with the pointer during a slide show.
Hide the pointer and slide show toolbar immediately by pressing Ctrl+H. Hide them in 15 seconds by pressing Ctrl+U.

Selecting data in Excel.
To select only the blank cells in a region, select the region, click Go To on the Edit menu, click Special, and then click Blanks.

Click the Message Flag button and then type the text you want in the Flag to box.

Working with text in Word – to go directly to the last edit you did in your document press Shift+F7.

Every job requires a variety of tasks during a given day. Maybe yours includes meeting with clients, preparing a presentation, or collaborating with team members on an important project. No matter what you are doing, staying on top of all the tasks you need to perform is crucial. By organizing them effectively, you can plan ahead for tomorrow and improve your productivity at the same time.
http://www.microsoft.com/atwork/productivity/streamline.aspx

Use the More Autoshapes command (click the Autoshapes button on the Drawing toolbar) to display the Clip Art task pane, where you can search for and insert clip art.

Windows 7 Professional and Ultimate feature an optional plug-in called XP Mode.