This is an Italian parody in gibberish of a pop song I'd never heard. It's good quality silliness and charming dancing.
I suspect it's a parody of American body language as well as spoken language.
If I want to hear what an American accent sounds like, it helps to listen to the BBC. After a few years, the American accents started jumping out at me instead of just sounding normal.
The other educational accent experience was reading Sean Stewart's Mockingbird-- it's set in Texas. It isn't written in dialect, but when a Canadian character shows up (someone with an accent more like my Delaware accent than a Texan accent would be), the Canadian "sounds" very clipped and emotionally flat.
The book's about a woman who inherits a bunch of small annoying gods from her mother and has to figure out how to deal with them. It's pretty good.
Video link thanks to tamnonlinear.