DNLA NAS server with the help of MiniDLNA for your Raspberry Pi.
MiniDLNA is another one of those articles where I had to go bouncing around between various sites to truly get all of the details about how to setup and maintain MiniDLNA properly. For those who do not know what it is. DLNA stands for "Digital Network Living Alliance" and it's a protocol used in many consoles, smartTV's even phones as a standardized protocol that they can all communicate on (depending on video and encoder). The Raspberry Pi is perfect for such a project as it's low power and can put out an 'okay' level of bandwidth can can handle most 720p videos and even some 1080p videos that are encoded well. This is also great if you want to have a constant library of music and pictures that you would like to share with your entire LAN for anyone in your house to view or play.