Looking on the internet deeply has found these results:

watching TV is the most popular phrase on the web.

watching the TV 11,030,000 results on the web	watching TV 119,700,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Bet you any money she's watching the TV. He knew I'd be watching the TV. At night, she goes to bed early while watching the TV. It was a few hours later, I was eating dinner, watching the TV when I heard all the police cars outside their house. He was watching the TV first. When I got home, my mother and father were watching the TV and it came on the news that the man I had shot was dead. My father always sleeps while watching the TV. I was watching the TV, and they had a brief little thing on it saying that there's an outbreak or something, but I mean, like, I don't know.	I think watching TV is a waste of time. Henceforth, Ms. Smith's duties shall be limited to watching TV and Web surfing. It was like watching TV or something. My children are staying here tonight watching TV. He's watching TV and drinking Martinis all night. Just watching TV, smoking pot. He was home that night watching TV. He says he's been watching TV.

watching the TV

11,030,000 results on the web

watching TV

119,700,000 results on the web

More popular!

Bet you any money she's watching the TV.
He knew I'd be watching the TV.
At night, she goes to bed early while watching the TV.
It was a few hours later, I was eating dinner, watching the TV when I heard all the police cars outside their house.
He was watching the TV first.
When I got home, my mother and father were watching the TV and it came on the news that the man I had shot was dead.
My father always sleeps while watching the TV.
I was watching the TV, and they had a brief little thing on it saying that there's an outbreak or something, but I mean, like, I don't know.

I think watching TV is a waste of time.
Henceforth, Ms. Smith's duties shall be limited to watching TV and Web surfing.
It was like watching TV or something.
My children are staying here tonight watching TV.
He's watching TV and drinking Martinis all night.
Just watching TV, smoking pot.
He was home that night watching TV.
He says he's been watching TV.