It would more-or-less negate the need for a printing solution, as our apps could generate PDF and spawn an external program to print. Almost equally compelling would be to be able to take a text widget and convert it to valid HTML+CSS, but I like the idea of a single file PDF more.
escargo 09 Jan 2008 - While being able to generate PDF is useful, being "able to take a text widget and convert it to valid HTML+CSS," would greatly simplify the creation of web page (and potentially web site) editors.
EKB There appears to be a nice start at Text2PDF. It only does the text, not the formatting, but it seems like a very good place to start.