For graphics, grab yourself a gimp.
For server side languages, well this forum is the most obvious example the springs to mind. This whole forum is nothing more than the contents of a database spat out into an html file by a server side language (in this case PHP). The HTML give structure and meaning to the data, but without a database to store the information, there would be no way of recording what people type up and post and without the server side language (PHP) there'd be no day of putting that data in or getting that data out of the database and written into an HTML file.
PHP also handles the process of you logging into the system and tracking you and storing your session data to give the illusion of being a user in a system with your preferences and other data being carried around with you from document to document.