Siri needs you to know the future is here.
The Apple personal assistant couldn't sit out Back to the Future Day -- after all, she is a crucial part of Oct. 21, 2015 (not Marty McFly's version, but the real version).
So spend about 30 minutes of today repeating into your phone "Happy Back to the Future Day, Siri" to hear all her sassy responses. Then ask her if she has a time machine you can use to get those 30 minutes of your life back.