I discovered a nifty app for my droid last week - Document Scanner by PWN with your Phone. The app allows you to take a picture of a document and convert it to a PDF file that you can store on your phone, e-mail to someone or upload to Google Docs.
There is no limit to the number of pages you can incorporate into a document - and you can add more pages at a later date. The program is easy to use, just a couple of clicks and you've got your PDF file.
I used the app to scan an entire case file the other day and the quality was outstanding. By uploading the PDF file to Google Docs I was able to download it to the hard drive on my desktop and print out the documents later that day.
Document Scanner sells for $3.98 and there is a trial version you can test drive for 15 days at no cost.