Bad, because watching tv for a long time can make us lazy. 
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You would think that the fact that your watching it feels like you made something of an image in your head for instance: your watching cartoon right now and your laughing because it's funny, and when you laugh you make an image of it. it helps you remember the good times when your in a bad situation like when your ill, when somebody is ill THAT somebody will become sad so you remember the image when your sad and you will be happy for most of the time.
also Tv hurts your eyes so don't watch too much.

First, you'd think of a lot of things inspired by the Tv Good and Bad.
Second, Tv can faze you and make your eyes hurt IF you watch Tv too much.