Summary: UPDATE 2012/01/17: I finally got my 3D glasses. Guess what? You can't put the TV into 3D mode when using SmartApps like Vudu. So Vudu offers 3D material now but you can't watch them in 3D on this TV. Way to go, LG! You really thought this through. Hoping for a firmware update from these idiots.
Summary: On my new 50PZ750 there is a problem with the HDMI cable connection between the cable box and TV, picture flashes on and off and sometimes the there is no sound, all starts while changing channels, changed to a high speed HDMI cable and different cable box, same problem.