I recently started watching TV again. It's amazing. I have three particular observations:

1) Cable TV actually has more advertisements than regular TV. This doesn't make any sense. What am I paying for?
2) They relentlessly show the same advertisements over and over and over, so there are 4 or 5 ads that you see almost every single commercial break all day long.
3) Comcast (my cable company) constantly advertises for itself. I guess the idea is that once they've got you as a customer, if they constantly tempt you you'll upgrade more easily. Or perhaps they just fill empty ad space with house ads.