Another free directory assistance service, this one from Google. Call 1-800-GOOG-411 (that's 800-4664-411). As you would expect from Google, the entire thing is automated — there are no human operators. In my experiments, GOOG 411 provides highly relevant results with great voice recognition. But it's limited to businesses, it's not a white pages search. I like that it offers to connect you to the business immediately, so you don't need to write down or dial another number.