If you've got a lot of movie and TV files floating around your computer you're doing a disservice to your free time by not installing Plex. It's a gamechanger app that lets you instantly stream all your media to any phone, computer or TV in your vicinity. Originally an offshoot of the popular XBMC (now Kodi) media player, Plex operates as a server that delivers your content, be it downloaded TV shows, ripped DVDs of movies or old family videos, to clients that operate on every single device that plugs into your TV or has a screen. It's simple to use, available on everything and ridiculously handy for people with large media libraries.