If you want to upload a lot of documents to Google Docs, it's difficult to upload them one by one. You can send the documents by email, but this option is not very reliable and not all the formats are supported.

Google Docs Batch Upload, developed by Anton Beloglazov is a command-line Java application, so it should work in Windows, Mac, Linux, as long as you have JRE 1.6 and you can use it to upload multiple files at once to Google Docs.