I joined a few years back but never post anything.  There's also some rule about message boards whereby one isn't supposed to respond to old threads because it's bad ettiquette.

I think owning a TV is a mortal sin because it's like owning immodest material, as immodest material can easily be found on TV.  Everything they put on it, you own and could watch.

Using similar reasoning, we don't have radios or internet in our cars or house, and think these things are mortal sins.

Where we live, Detroit, we have found very few people anything like this, ever.

When I was a kid, I watched a lot of TV, had a radio, and internet in the house.  I actually study all these things, so I do some research that compares 1970's (or oldest) TV / radio / internet with later versions.  I note that all these things have gone from bad to worse.  With what was on radio when it first came out, why wasn't there more of an outcry among Catholic priests and bishops against it ?  Oh, it turns out this is because immodesty and heresy in public theater and advertisements were tolerated before it, paving the way.  I've been to a lot of tridentine Masses and no priest has ever said, "Oh, and get rid of your TV or you're going to Hell !"  Along with immodesty in dress, even traditional priests don't talk about this, along with so many other crucial issues.

There's a ton wrong with TV and movies.  Everything on it is based off of heresy and paganisms.  There's nothing that's based on really good understanding of Catholicism.  I watched EWTN back in 2002 and it wasn't until I later read through a ton of catechisms and Saints' writings did I realize what a farce EWTN was, even then. And that was before it started getting worse.

I've found a lot of evidence that the American government controls what's on TV, radio, and movies, using them all to support their policies and agendas.  We all saw this clearly looking back on 9/11 and its aftermath, how from all sides the American public was told that we had to go to war.  It may be very subtle, but every commercial you see on TV is telling you an anti-Gospel, about how happiness is to be found through buying this or that.  What ?  That's lies.  And increasingly, totally unrealated immodesty is being used to sell things.

And what's on the TV is on people's minds and spills over onto billboards and stuff.  Pretty soon they'll be killing Catholics and stealing their stuff more openly than they already are.

The solution ?  I think this country is too messed up.  We're moving to another country.  I personally find fault with our ancestors, who came here knowing that it was a Protestant country.  They should have known enough about Catholicism to send the money back home and return as soon as they could.  Non-Catholic countries aren't protected the way Catholic countries are.  Look at Hurricane Katrina.  America's really bad and in store for a lot more than that.

I didn't read many of the other responses, but my guess is that most traditional Catholics think having a TV is okay, if they use it with care.  American Catholics are like this, even the traditional ones can't see the good from the bad.  Most tridentine Catholics don't believe in early marriage either, getting married at like 40 and thinking God is cool with that. 

So I'll close with my favorite Scripture verse :
"Do not give thy years to the cruel."

Invest in Catholic countries, folks.