You have a few options.
Tear down the house, build it upside down with velcro on the ceiling. Get velcro shoes. You'll feel lightheaded for a bit with walking on the ceiling (your floor), but the TV will look great!
You can move to the opposite side of the globe, where of course the people are upside down from where you are, once again, the TV will look normal there.
When watching TV, do headstands. It's not as permanent as the other two fixes, but will take less work from you.
If you actually have a computer attached to the TV, there are already posts about how to fix it that way.