120 Hertz - It's the refresh rate, stupid!

I didn't know the answer to this today, hence the title to this post.

Walmart and other stores are advertising T.V.'s with a 1080p 120 Hz. LCD
something like this below:

• 55" Class LCD HDTV (54.64" diagonal viewing area)
• 1080p
  
• Full High Definition 1920 x 1080 Native Resolution
• 120Hz Smooth Motion technology

for a "normal" T.V., 60 Hz. (Hertz) is the refresh rate. Here, the higher number is better, but not necessary. On a computer monitor(CRT), 75 Hz. is more desirable if you notice "flickering". This usually occurs during action such as game play. If you have a decent LCD you probably don't notice this effect. If you have the money, go ahead, blow it! Just remember, the source of what you're watching matters to, so results may vary and often do.