One of the things I was most excited about when first pondering moving to a Mac was the idea of not just joined-up applications, but joined-up devices. I’d been told wonderful tales about a piece of software called Salling Clicker, which made the Mac controllable from a mobile phone. There were also other benefits – with the phone and the Mac joined by bluetooth, you can get the Mac to react when the phone is nearby or the phone leaves the vicinity. The only downside – the phone had to be a SonyEricsson.
If I’m carrying my phone about, my laptop now turns off the screensaver when I walk into the room, and turns it back on when I leave the room. When a call comes in, it mutes any music playing on the Mac. I can also use the phone as a remote pointing device in Powerpoint or Keynote.