Looking back at ten years of evolution in entertainment

With the decade drawing to a close soon, we considered doing a "Decade in Technology" retrospective to cap it off, but that's an extremely broad topic. Instead, we decided to narrow it down to a look back at the ways in which we've come to use technology to entertain and distract ourselves. What are the big innovations of the past decade that have fundamentally changed some aspect of the way that people use their free time?

We brainstormed answers to this question for a bit, but then we thought, why not just ask our readers? And so we throw open the floor to you: what revolutions—both big and small, visible and obscure—has this past decade brought to the ever-changing world of entertainment?