A:
Chris, thanks for the questions - hopefully we can answer these concerns for you.
The only consumer products available today that output higher than 60Hz signals are some high-end computer cards. Many computer gamers have a high speed or high end monitor already, and aren't interested in dedicating a 50" television for their computer.
Rather, consumer electronics manufacturers - like us and others alike - send video pictures with 60Hz signals.
Game consoles like the PS3 and XBox360 - and even the upcoming models - will still be displaying 60Hz, as will Blu-Ray players, cable and satellite boxes, and so on.
When you purchase a television with a 120Hz or a 240Hz panel, what you're doing is purchasing an upgraded panel when compared to a 60Hz panel. Rather than viewing 60Hz signals, the upgraded panel will have additional processing, and display the picture faster and smoother, which in turn improves the motion perception in the human eye. The point of the TV's upgraded smoothness is appeal. It's a better picture than a 60Hz panel's picture.
When you're watching a 240Hz television, you are watching a 240Hz picture. Even if the source feed is a 60Hz signal, the television is taking that signal and upgrading it for a smoother picture.
Hopefully, this will help illustrate the benefits of the higher television ratings.
As for VGA and DVI inputs, VGA is analog and while still relevant for many of today's computer applications, consumer electronics has gone High-Definition and digital. DVI was available prior to HDMI, and sends a full digital picture signal - just like HDMI, but without the sound.
HDMI was introduced as a replacement option for DVI, and included the ability to transfer audio in the same cable.
HDMI is the clear winner for sending a a) digital picture, and b) audio through a c) single easy to install cable.
Many computer manufacturers are also adding HDMI ports to desktops and laptops.
Hopefully that helps set the record straight. Thanks for the opportunity to address your questions.
--Mr.Samsung