I use a Moshi Mini DisplayPort to HDMI Adapter (with audio) to connect my MacBook Air to my LG TVs. One is an LCD the other is a wall-mounted Plasma. Both have HDMI support. I've always used the LCD to connect my MacBook but never the wall-mounted plasma. I decided this time to connect to the Plasma as the display is bigger. I connected the HDMI cable that I use for my satellite receiver in the Moshi, the other end of the cable is already connected to the TV. The HDMI cable is different from the cable I connect my MacBook to the LCD. But as you see, I only get a wallpaper and the cursor. I tried restarting my MacBook and I also turned off/on the TV but to no avail.