I have for sale three powerline units. Been using them to connect my NAS, upstairs with my internet and then the third to connect my PS3/TV/XBMC to complete the network. All network leads and documentation/packaging included.
More than capable of streaming HD movies across them. The part numbers are:
TP-Link TL-PA251 - AV200+ with pass through so as you don't lose the plug.
TP-LINK TL-PA411KIT - AV500 Mini.
I'm after £35 posted for the lot but am willing to split if need be. Email me on martin.somerfield (at) gmail (dot) com.