Good movies and shows for kids and teens? Niece is coming soon?

I'm in college but didn't live in the US when I was a kid and I don't
know about shows for kids and teens and good movies. My niece is
coming over and she only speaks English. I don't really know what she
likes, I think she just turned 9.

What shows did you like when you were a kid, and do you have favorite
kiddie movies?
Movies for teens and pre-teens are fine too as I don't know what she's
into.

Thanks!