This year I’m moving to HD at home, but streaming HD over a wireless connection is far from ideal. The next step up from that is to use the Ethernet over power adapters (like Homeplug) which are supposed to be pretty decent, yet expensive. However, I’ve gone for a wired connection using some really flat Cat 6 gigabit Ethernet cable.
Usually it’s a really hassle running cable from your router to the device, but because this cable is so flat it’ll go easily under most doors and you can then run it under the carpet.
At about £14 from CPC (for 15 meters) it’s not a bad price compared to buying wireless or power adapter kits.