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?
(..) "Mike!" It's real. She said pig. Sex with a pig. They want me to have sex with a pig? Live on television this afternoon. But what...? Who...? We're checking with embedded operatives, compiling a list of suspects. Meanwhile, the demand has been made. (..)2011 TvShow: Black Mirror Title: The National Anthem Season: 1 Episode 1
(..) Just play it. 'There is only one demand, and it is a simple one. 'At pm this afternoon, 'Prime Minister Michael Callow must appear on live British television 'on all networks, terrestrial and satellite, 'and... No! 'On all British networks, terrestrial and satellite, (..)2011 TvShow: Black Mirror Title: The National Anthem Season: 1 Episode 1