There's nothing 'on television' right now. [=there are no programs that I would like to watch now]
I recognize your face. Are you 'on television'? [=do you appear in a television program?]
What is 'on the television' [='on TV', ('chiefly Brit') 'on (the) telly'] tonight?
(..) - Oh, little TV for history. - Love Boat? - For history. Navy. That's not the Navy. I mean, he could watch television at home. We're paying you $ a month. If he's gonna be sitting around... ...watching TV all day, we're taking him out of here. Go pay more at other daycare (..)2006 The Pursuit of Happyness