The 360 has many accessories that are life changing. My favourite one is the wireless adaptor. The broadband access point in my home is in the computer room and my Xbox is in the living room. My girlfriend hates trailing wires, so it had to be the wireless adaptor.
But it was just far enough away from my wireless router to drop connection quite regularly. But then I had the idea to get a USB extension cable, to put the wireless router at the end of it. If you're old enough to remember, think of having an indoor aerial and trying to catch the TV signal.
I found one that was 5 metres long and it rests against the wall behind my sofa.
Like Mcdonalds, I am loving it.