It depends on your level of English I think. I am a native English speaker and learning Croatian. I found it really helpful to watch children's programs rather than adult TV shows. I started with Peppa Pig and often I could find the same episode - once in English and once in Croatian. It REALLY helped me to hear the language and to learn some good vocabulary. Try this: https://www.youtube.com/watch?v=GHYYmyvhskc You might be able to find a Japanese version to compare the language Gordon

The Tonight Show Starring by Jimmy Fallon The Tonight Show with Conan O'Brien The Tonight Show with Stephen Colbert The Late Show With James Corden (Carpool Karaoke) The Ellen Show And a lots of show like this you can search in youtube !.

The Graham Norton Show, is a good one. This show has guests from all over the English speaking world, and beyond.

Even though It is considered a Children's show, I would recommend Phineas and Ferb it is an animated comedy, about children who create crazy machines! I think it is very funny! And It has Simple English in it so it will be easier to understand.

I agree with Anh - talk shows are amazing. I've just written an article about them for the iTalki blog. I hope they'll accept it. Jimmy Fallon and Ellen are so funny! I don't watch YouTube much but I really like Kyde and Eric's channel. They're 2 Americans who live in Japan so I think it could be fun for you to watch: https://www.youtube.com/user/kepsux I suggested some more shows in this discussion: https://www.italki.com/discussion/153567