Go to list of pdf files etc from your google docs for download
The next page will give you a list of files from your google docs (pdfs and other arbitrary files) and allows you to download by clicking on the title.
I made this app because I couldn't download pdf files from google docs to my Eken M001 android 1.6 tablet. The mobile browsers (built in, and Opera Mini) just don't show download links. This site gives me those missing download links.