Tara Dunion is a spokeswoman for the CES. She says 3-D televisions promise to bring the intense experience from movie theaters to the home. The huge popularity of 3-D films like "Avatar," "Up" and "Monsters vs. Aliens" has many people willing to buy this costly, developing technology.

Dreamworks Animation made "Monsters vs. Aliens" and the popular Shrek series. The company announced last year that it would only make 3-D films in the future. And, television networks ESPN and Discovery Communications say they plan to operate television channels in 3-D. Big TV manufacturers like LG Electronics, Panasonic, Sony and Samsung have all developed their own products.

CES attendees use 3-D glasses to play a gameVOICE ONE:

If you have seen a 3-D movie, you already know that you need special eyeglasses to watch. Some 3-D TVs do not require special glasses. But experts say it will be years until such technology is ready for the general market.

The latest 3-D TVs work by dividing picture images in two, one for each eye. When each eye sees very similar, but different versions of an image, the brain thinks it is seeing depth, or three dimensions.

Dividing the image can be done in two ways -- both using special eyeglasses. One 3-D technology uses low-cost polarized glasses. Each side of these devices blocks a set of images that appear in a different form of polarized light. So each eye sees a slightly different image, producing the 3-D effect. But TV receivers that use what is called a passive glasses system are costly.