A new contender for the Pragmatic Toolkit is PDFCreator, a SourceForge project which allows you to print to a pdf file much like you would a normal printer.  This is useful if you want to need to capture output to a platform inpependant format.  For example, you have a web page that shows a reciept from an online purchase.  Use PDFCreator to print it to a PDF so you have a nice record of the purchase.  This also works for screen prints or any other capture operations where you have an applications that can print (basically any editor program like Word, StarOffice, PaintShop Pro, Photo Shop, etc). 

I use it to screen capture protected web pages (on sites where you need to sign in) and send it to someone who doesn't have access to the site, like my wife.  It's useful if you are going for a paperless office as you could scan your paper items and then print them to PDF (if your scanning software doesn't support it natively).  You can also create product documentation by creating the document in Word and then printing it to PDF to create a manual for distribution to customers.

Here is the link:

http://sourceforge.net/projects/pdfcreator/