I like powerline networking. You could try other ideas such as moving to 802.11g WPA2 and various channels.
Bob
I really like this TV but am frustrated by regular wireless network connection drops while watching netflix. The tv will also not stay connected long enough to download a software update. It always reconnects immediately when I subsequently search for a network. The router is about 18' from the TV. The current software level is 2203. My wireless connection is configured to use DNS and it is linking to an open network. The wireless Apple TV I have hooked to this TV is located in the same location as the TV and exhibits no dropouts as happens with the TV. I have many other wireless devices that have no issues maintaining a consistent connection.
I have seen numerous forum entries with similar issues but none seem to have a solid solution....other than run a wire across the living room. Ideas?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic