If you are 30 or older, you will think this is

I didn't see a colour TV until I was 7... and you could go make a snack between the time you turned it on and the time it actually warmed up enough to show a picture. When we finally got an "instant-on" TV, we had to make sure to unplug it during lightning storms as it was apparently possible for the tube to explode! I was never 100% convinced of that but my parents were sure that that was the case so we always did it.