Google Maps for BlackBerry has been updated to version 4.2 bring some great new features with it. The update adds the ability to get biking directions, sharing of your location, and a new format for search results. I personally have had some issues with the share feature via SMS, with email seeming to work without issue. You can download the update by visiting m.google.com/maps from your BlackBerry browser today. Read more about the update on Google’s Mobile Blog.
(There is an app (shameless plug, it is an app I wrote) in the BerryScoop store called FindMeHere which allows you to send your location as well. Just in case you wanted more options.)