When it comes to energy hogs in your home, few devices are as harmful to the environment and your utility bill as a big-screen TV. While the move from CRT to flat panel technology has generally meant some power savings, that's ultimately been outweighed by the much larger sizes of these sets. It just doesn't matter if the core technology uses less power if the new set is four times as big.

When we got fiber optic cable installed a year ago, the cable guy spent five hours crawling around our house hooking up the latest, greatest technology — converter boxes as big as DVD players, an Internet wireless router and cables running in every direction. We have some sort of central control box hanging on our basement wall with a green light glowing in the dark.

LG announced this Thursday that its upcoming LX9500 will be the worlds first HDTV set to combine a fully-LED-backlit LCD with 3D support.

Walmart.com has the Sceptre X46BV on sale for $598 (with free shipping to a local store). Newegg has the same model marked down to the same price, $598, plus $50 shipping. Either way, that's a substantial discount from the current regular price of about $730. The 46-inch LCD HDTV has a 1080p resolution, a 60Hz refresh rate, and a 16:9 widescreen aspect ratio.

Samsung is a company more commonly associated with HDTVs and smartphones, but the company's camera announcements at PMA 2010 in Anaheim made it clear that they're very serious about cameras.