Every now and then you run across a tip that makes your whole day better. Thanks to Microsoft's KC Lemson, I've had that experience.
I just installed her most-excellent macro for quickly viewing the Internet headers of a selected message in Outlook into Outlook 2007. Took me three minutes to do and it's already saved me at least that much time. Install it as a button on one of your toolbars, and you can highlight a message, click a button, and immediately have a Notepad session with the headers all displayed (as well as have them in the Clipboard, ready to be pasted into, oh, say, the PowerPoint slide decks you're working on for a presentation you have to give next week...)
Thanks, KC! This is great stuff!