Zooming

PhotoShop: Holding SHIFT while zooming in and out with the zoom tool, will affect all your open documents in PhotoShop.

Shortcuts to styles

InDesign: To speed up your workflow, you can easily create your own custom shortcuts for your character and paragraph styles. Open up the edit style dialog box by double clicking the desired style (or right-clicking and selecting ‘Edit…’). In the ‘General’ tab there is an option to insert your own custom shortcut. Insert your handy shortcut and away you go.
NOTE: InDesign will dispay if- or if not the desired shortcut is in use by some other action.

Eyedropping

InDesign: The eyedropper tool in InDesign behaves a bit differently than the eyedropper in other programs, especially regarding text. For instance you can pick up character and paragraph styles from a formatted text and apply it to the text you have selected.

Also, when you pick up a text style, the eyedropper cursor changes to a filled eydropper. With the eyedropper filled you can drag and select pieces of text you want to format with that style. While the eyedropper is filled, to avoid having to select the eyropper tool over and over again to pick up new styles, you can hold ALT to temporarily set the eyedropper to the default state (empty eyedropper) and pick up a new style.

Working with tables and styling tables is really easy with the eyedropper tool in InDesign, as you can pick up a style from a whole cell within the table, and drop the style to another cell or a row of cells at once by dragging.

Placing Text

InDesign: You can place text into InDesign and have it thread over pages and have InDesign create new pages as needed. To place a textfile for multiple pages simply hold SHIFT while placing, and place it on the disired page.
On the same note, you can have your text placed in threaded columns also. Just create textboxes (columns) on a master page and remember to thread them on the master page. Then hold SHIFT while placing and place the text into the first column on the page in the document (do not place it on the master page). InDesign will place your text in the threaded columns and add pages as needed.

Layer Styles

PhotoShop: Creating layer styles is a useful design tool. While creating a layer style you can set various setting within the style by click-dragging over the image itself. For instance, create a new drop shadow style and with the Layer Style window open, you can drag the shadow to a desired place on the image.
Also regarding layer styles you can go to “Scale Effects” by right clicking on a layer style in the layers list. Within the Scale Effects dialog box, you can scale the styles for a selected layer, by percentage.

On that note, remember you can copy a layer style between layers by…:
CS1: Dragging the style in the layer palette to a different layer.
CS2: Hold ALT and drag the style icon to a the desired layer (In CS2, dragging the style will simply move it between layers).