How to convert a command line table (drush output) to any spreadsheet? (csv,excel,ods)
Check out this new feature from the latest dev version of Drush 8.x-6.x:

$ drush @dev pm-list --format=csv
Administration,Actions permissions (VBO) (actions_permissions),Module,Not installed,7.x-3.1
Administration,Administration Development tools (admin_devel),Module,Not installed,7.x-3.0-rc4
Administration,Administration menu (admin_menu),Module,Enabled,7.x-3.0-rc4
Administration,Administration menu Toolbar style (admin_menu_toolbar),Module,Not installed,7.x-3.0-rc4
Administration,Administration views (admin_views),Module,Enabled,7.x-1.1
CCK,CCK (cck),Module,Enabled,7.x-2.x-dev
CCK,Content Migrate (content_migrate),Module,Disabled,7.x-2.x-dev
CCK,Location CCK (location_cck),Module,Enabled,7.x-3.0-alpha1
... etc.


If you are at all wary about using a dev version of Drush, you could check it out following the version control instructions at http://drupal.org/project/drush/git-instructions.  Then, you can use git checkout 7.x-5.8 to go back to latest stable, and git checkout 8.x-6.x to go back to latest dev, and use stable most of the time, and the dev version when you want to output something in another data format.

Update:  Note also that Drush 8.x-6.x-rc4 is out now, which is pretty well fit for general consumption.

Update 2: Note that this is a standard feature now in Drush 6 and Drush 7 (master branch of Drush on github)