This is old news, I'm sure...but I have been using Google's new "Goog-411" directory assistance service for a couple of weeks now...and it has become the most useful "app" on my BlackBerry. 1-800-GOOG-411
With directory assistance 411 calls costing $1.50-2.00 from your carrier, this free service can and will save you $30-50 a month depending upon your usage. It's the best Christmas present I have ever given myself!!
Consider it a gift from me to you!!