Update: This doesn't work anymore, not sure if it is Mavericks or not, but regardless I've created a completely rewritten python version of the extension which you can download here http://goo.gl/uhzK7I . It is just as hacky as the original version of the extension and uses a deprecated API from Google that is currently being aggressively rate-limited, which all goes to say this may stop working at any time. Enjoy!
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Here's a hacky attempt at my first workflow. It is a google search workflow that lists results from google as you type. It probably needs a bit more work, but is pretty cool. I used the google-search gem and https://github.com/canadaduane/alfred2-ruby-framework in addition to some code from the Google Autocomplete plugin written in ruby by Ted Wise. I've only tested it on my Mac, so let me know if it breaks on yours.
Here's the link: http://goo.gl/ufg81 (see new version posted above)