Want to see the power of Joomla?
The Joomla Site Showcase is a free service provided for the #Joomla community to show off the power and extensibility of #Joomla. Any person or company is welcome to submit their site (currently 1001 are listed) for inclusion in the showcase. if you are still not convinced that #Joomla! will fulfill your needs, or want to compare it against Drupal, Word Press or any other CMS/Blog, then the visit may be worth!
Another interesting collection of sites is this Joomla Resource Directory promoting sites offering or selling #Joomla extensions, templates, or services.