There’s a growing amount of buzz about 3D television, which seems strange given many consumers are still enthusiastically buying large-screen LCD and plasma televisions.

In any event, 3D seems to be attracting a lot of chatter but here’s something not getting a lot of TV: If you watch 3D television, you can’t do anything else.

So, what’s the big deal about not being able to do anything else but watch TV?

Well, when most people watch TV, they’re also doing other things – reading, eating, surfing the Web on a laptop, knitting, exercising, etc. The problem is it will be difficult to do most of these other things when watching 3D television because you have to wearing special glasses that make it difficult to see anything other than the TV.

So even though many of us our couch potatoes, we’re multi-tasking couch potatoes who may be challenged to focus on doing just one thing. Unless 3D improves, the inability to multi-task may be the killer blow to 3D television. At the very least, it may keep 3D to being a niche service for special events such as sports and some movies.

For more thoughts on the challenges facing 3D TV, check out James Brumley in Investopedia.