I noticed that my guys were getting bored, so I had to tear down the whole system and move it into an area where the TV is visible out of one end of the tank.
I have now found that I may have to turn the tank so they can see the TV out of the front of the tank because they all try to crowd into one end to watch the TV. I am afraid the will start fighting over position.
They hate to watch Moby Dick, They love to watch finding NEMO, One of the clown fishes has the hots for Dora everytime they watch NEMO he gets a woody, of course wood floats so he is always bobbing at the top of the tank.
Used to have a tank in the bedroom but everytime the wife and I did, err well, you know . . . she saw all the fish watching us. Had to move the tank.
So now you know they do get bored and it is up to you to entertain them.