Yes. I second the desire to figure out how to do this. I'd like to see my notes on the printed copy as well!
Rob
Edit: I have a work-around. It's somewhat ugly & very convoluted, but it works and yields a PDF with notes printed in the last page(s) from Preview.
1. Install Skim:
http://skim-app.sourceforge.net/
2. Open your annotated PDF in Skim.
3. Select File -> Convert Notes...
4. Manually edit the notes to delete everything except note comments (as desired).
5. Select File -> Export...
6. Select "Notes as RTFD" from the "File Format:" menu & save
7. Open the RTFD file in Text Edit
8. Select File -> Print...
9. Click the PDF button and select "Save as PDF..." and save
10. Open your original PDF with notes in Preview (Make sure your sidebar is visible (View -> Sidebar) and it displays pages as thumbnails (select list at bottom of sidebar))
11. Drag your Notes file (from step 12) to the bottom of Preview's sidebar
*phew*. Now you can save & print your PDF with your notes on the last page(s).
Rob