So simple you forget how cool it is

I was out Christmas shopping a few days ago when my wife and I walked into a clothing store. I thought I recognised the song that was playing, but I couldn't remember what it was. I pulled out my phone and used the Bing audio search to detect it, then I used my Music Pass to download it and later we listened to it on the way home in the car.

I actually said to my wife that Microsoft could make a series of ads out of stuff like this - sort of like Smoked by Windows Phone but actually showing how things are done.

So a question - what have you done with your gear that after you've done it you've just sat back and thought - my God that was cool?