One of the new Outlook 2007 features that I use the most is the ability to preview attachments within the email message. Of course, this assumes that the attachment is a photo or document created with Microsoft Office. Sadly, there was no preview handler for PDF's built into Outlook.

My PDF viewer of choice is FoxIt Reader, and so I was very happy to see Tim Heuer's add-on for Outlook that allows me to preview PDF files. This free app does exactly what it says, without issue, which is all I can ask for from any piece of software.

If you still use Adobe's Acrobat Reader to view PDF files, you can use Ryan Gregg's add-on that does the same thing. Please note that you will need to have at least Adobe Acrobat version 7.0 installed for this to work.