If you're a Firefox user like I am, you probably already know about the countless plugins that you can use to make your browser experience a lot better, efficient and easier.
There's a plugin called Twitter Search Results on Google that displays the 5 most recent tweets based on your search query. It shows up right before your search results.
There is also Google Twitter integration which is a script that shows up in its own area, like Google Images, or Google Blog Search.
Thanks Search Engine Journal for the heads up!