Lifehacker recently posted an article that pointed me towards this free PDF creation program: Nitro PDF Reader.
I’ve been playing with it and this little program is pretty cool. Here is a quick feature list:
Add Signatures (or Pictures)
Extract Text or Pictures from a PDF
Fill out Forms
Add text or notes anywhere
You can download a copy here.
If you want to split, join or rotate PDFs I recommend the PDFTK Builder (also free)