Even if you don't need a hard copy print out of information from your Dynamics CRM system, the print view can be very useful.  For example, if you view all of the information about an opportunity, including all notes in descending chronological order, this option can give you that view.

In any record, simply click the printer icon at the top:

Printer Icon

The print view, below, will give you a full view of the record, in this case an opportunity.

Print View

Unfortunately, I have noticed that items in an iFrame will not appear in the print view.  If I get more details on that I'll update the blog.