Black Label (ThemeForest)

Further details: <a rel="source" href="http://themeforest.net/item/black-label-fullscreen-video-image-background/336949?ref=hullabaloo_bard">Click Here
Demo: <a rel="source" href="http://themeforest.net/item/black-label-fullscreen-video-image-background/full_screen_preview/336949?ref=hullabaloo_bard">Click Here

Black Label is a porftfolio WordPress theme which gives you fullscreen video background support, fullscreen HTML5 video background support and fullscreen images background support.

Most importantly, this WordPress theme is incredibly easy to use.