Dragonball Z
Goku is a martial artist....and so is Piccolo (except he's an alien) and Krillin (except he doesn't have a nose and he's a midget) and Tien (except he has a third eye) and Chiaotzu (except he's an evil death mime) and Vegeta (except he's pissed because he's not Goku) and Gohan (Goku's son) and Trunks (Vegeta's son) and Goten (Goku's other son) and Freeza (except he's a metrosexual lizard) and Cell (except he's a giant bug) and Yamcha (who in early episodes could be easily mistaken for a weak Goku) and Boo (who's fat or childish or just flat out bizarre)
Okay okay. So I'll some the whole damn thing up for you now. They are fighters and they power up and they fight each other....that's it.
This is not the first anime I'd ever seen but it was the start of my decent into the strange world of animes. At first the show is good and it gets interesting. You enjoy their training sessions and you begin to become attached to the characters. All the characters have their uses and you like them for it....then it happens.
The Vegeta saga ends and they go into space and everything goes straight to hell from there. They never quite recover from it. A stupid process of power-up / say something threatening / throw a punch / power up / repeat - starts and they won't stop. Fights that ordinarily take one episode are spread throughout 5 or 6 or even 10 in some cases. All the support characters that you liked...are useless now because it always comes down to Saiyans. It's worthless.
Raditz saga - 2 out of 5
Vegeta saga - 3 out of 5 Not bad
Everything else - 2 out of 5 maybe even 1 out of 5 in some cases.
Buu Saga - 3 out of 5
This is a hard show to review because it changes pace and style so often that it's almost like the writer is changing personality throughout the series.