Many game consoles aspire to be more than just a game console, but Xbox One really means it. Xbox One wants to be your everything and run your TV, your Blu-rays, your streaming, your music and, oh, sure, your videogames too.
Plays games, but also adds useful functionality to your cable TV setup; Improved voice commands, multitasking between games, movies, TV, et cetera
Voice input still hit-or-miss; Does live TV but does not let you control your DVR; No broadcasting gameplay (yet).