Levi at Wordze is giving away a list of over 100,000 keywords that are popular Google searches. It's an excel file with each keyword and it's rank.
Click here: for Google Keywords list and you'll be asked for your email. Then you'll be mailed the list.
The mail will also have a subscription activation link for wordze, which you don't have to click or complete. See my review of Wordze here - it's a valuable service for building keyword lists.