In the fast changing world of home theater, new technologies and innovations pop up year after year. Some of them, like Blu-ray movies, eventually gain a mass appeal and become a mainstay of the hi-def living room. Without a doubt, the current hot item in home theater is 3D television. While this technology continues to grow in popularity, it has not yet become a staple of home theater. Still, 3D has a lot of momentum behind it, and if you've decided you would like to dip your toe into the pool of 3D TVs available this holiday season, here are some key tips you should be aware of before you dive in.