The Roku is a set top box that allows you to stream content from Amazon video on demand and Netflix. It has both ethernet and wireless functionality built in. One of the most impressive aspects are that it is a High Definition set top box, which, when connected to your television via HDMI makes for amazing picture and sound. The device is priced very reasonably at $99 USD and is the size of two small paper back books.
Tips:
Use ethernet cabling when possible for best quality!
If WIRED is not an option, try to use Wireless-N for quality!