Bookmark keyword for "I'm Feeling Lucky"

The link in @Andy Mikula's answer no longer works since Google takes you to a 'redirect confirmation' page—thus beating the purpose of using the bookmarklet.

The alternative is to change the default search engine in your browser to DuckDuckGo.com. Then use the '!' (exclamation mark) followed by space and your search term. If you need to use regular Google, you will need to visit the site and search there.

It's http://www.google.com/search?q=%s&btnI=I'm+Feeling+Lucky (from the bottom of your link), where '%s' is the search string.

This link for example searches for "French Military Victories"

http://www.google.com/search?hl=en&q=french+military+victories&btnI=745