I just released a major update for my SQL Reports plugin. The new version, 3.06.14, has a lot of exiting new features like automatic scheduled backups of your database, and the ability to save archives of your DB and have them emailed to you. You can also retore these backups directly into your native WP DB or to an external database. The plugin uses the WordPress CRON API to schedule hourly and/or daily DB backups.
I also added a quick and easy shortcode for displaying a single variable from an SQL query. Just wrap your SQL query in the sqlgetvar short code like this:
[sqlgetvar]SELECT COUNT(*) FROM wp_users[/sqlgetvar]
Have fun with these new features and let me know if you have any ideas or suggestions for improvements.