I have just found a solution to all of my tablet needs!
Well maybe not all of them.
Anyway, I have a Wacom Bamboo tablet, and for so long I have been trying to find a way to write on pdfs so I can write notes for classes and not have to print it out, because that's annoying and a waste of paper.
SO I finally found formulatepro, for Mac, and it allows you to write/draw and type on pdfs. The only downside is you have to open it in this app until you're all done, and then you can save it as a pdf with everything all finished, so if you want it to be editable later on you must have two versions of the file. But this really isn't too bad, and it makes sense, so I'm happy with it. And if you have a locked document that your computer won't let you print or edit, you can open it in formulatepro and resave it (such as my passport application that I thought I'd have to handwrite but now I discovered this).
So if you have a mac and a pen tablet, you should try this out because it's free and so that's really neat!