From OutWit Technologies:
OutWit Docs is a simple document finder which automatically searches the Web for various types of documents and downloads them directly onto your hard disk. The search results are presented in one, easy-to-use window: there is no scrolling through pages of results to find the information you want. OutWit Docs explores any Web site and common search engines and will find multiple types of documents, including Office (doc, docx, xls, xlsx, ppt, pptx), OpenOffice, CSV, Flash or PDF files. You can do many searches in a row, the program will keep the list of results for each search, grab the files, sort and filter them, and automatically save them. OutWit Docs is compatible with Windows, Mac OS, and Linux.
This is a great app that makes finding and saving docs on the Web a snap. It saves mutliple files at once without having to click on each file. It has other cool features like a catch to store files and auto browsing and saving.