Export Multiple Files in Google Docs
Google has added a new multiple file export feature to Google Docs. You can now select one or more files from your Google Docs items list and export them in bulk to various formats.
Just highlight the desired files by clicking the checkbox to the left of each file name, then click More Actions > Export on the toolbar at top:

A window will appear asking you to specify the export file types for the files you wish to download (“export”) out of Google Docs:

If you want to simply export your documents as Microsoft Office files, click the Convert to MS Office formats link instead:

Your exported files will be zipped (compressed) and a folder containing your files will be downloaded; choose your download location, then open the folder containing your files.
Another recent change to Docs is unread items now appear in bold in Google Docs, helping you to see at a glance any shared files you haven’t yet opened.
For more information on using the new multiple file export feature in Google Docs, see Google’s website.