Roger wants an HDTV that he can use for gaming, and he needs it to have low latency. Leo says that the key feature is response time. Old style TV sets had a response time of virtually zero, which is why they're still the best option. LCDs are about 4 milleseconds, which isn't bad, but it does give some motion blur. Latency has to do with connectivity. If he can turn off processing, he'll get better performance.
David has heard about ClearBand wireless internet called OMGFast for $29.99 a month for 50MBPS. Leo says it's essentially WiMax and suggests going to BroadbandReports.com to find out what others think and get reviews. Users are reporting a constant 45-55mbps down, 4mbps up consistently. Latency isn't great for real time gaming or VOIP.