If you are watching TV, allow your bird to watch with you. There are a few minor drawbacks to living with cockatiels. These birds have what is referred to as powder down which provides a protective coating to their feathers. It also provides a coating on everything else in the rooms they occupy as well. Powder can be easily removed during your normal household dusting.
Cockatiels also love to toss their food in a fairly large area around their cage.
Sweeping up, along with changing cage bedding, food and water, will become part of your daily cleanup ritual. If you are considering purchasing a cockatiel, I highly recommend a handfed bird from breeders or reputable pet stores. If you purchase a cheaper parent raised, flock bred or unsocialized bird, you will have your hands full and may never know the true joys of a cockatiel. Ask the breeder or pet shop about the bird's parents. The certificates I use give all of the background information I have on each bird.