Intel's Wireless Display, or WiDi, technology is a great idea, but is only built into a handful of laptops. Plus, it has lag that makes it unacceptable for twitch gaming. A more flexible option is WHDI, a competing standard, otherwise known as Wireless Home Digital Interface.
The system we're using here is from Shenzen, but we've also tried similar units from Asus (the WiCast EW2000
) and HP (Wireless TV Connect
). All have a transmitter that plugs into the HDMI port on your laptop, game console, or Blu-ray player, and a receiver that plugs into your TV.
We especially like this version because the transmitter is smaller, like an oversize USB memory stick, and if you're too far away, you can boost the range at the expense of image quality. $150