Google enhanced their search results for XLS with added links to Google Docs. If you search for Excel files and click on "view as HTML" next to one of the results, you'll see three new options: a “download link, link to this page and Edit a copy online” using Google Docs. Here’s a quick way to view an Excel file in Google Docs: http://spreadsheets.google.com/ccc?url=URL_OF_THE_XLS_FILE (replace URL_OF_THE_XLS_FILE with the actual URL)