The karaoke mini-game in Yakuza 3 and 4 is basically PaRappa the Rapper, but with Japanese crazy.
As seen in the video below the Yakuza team knows a thing or two about singing animations. I think kazuma rocking machine gun kiss, is better than any animation in a Rockband/Guitar hero game. I think it's a fantastic example of japan being Japan.

skip to a minute in
  

God I loved the Karaoke in this game, and Yakuza 3 before it. One of my favourite minigames of the series, and introduced me to so much awesome J-pop <3 My favourite would be the duet between Akiyama and Hana.

Hot damn, YES!

" God I loved the Karaoke in this game, and Yakuza 3 before it. One of my favourite minigames of the series, and introduced me to so much awesome J-pop <3 My favourite would be the duet between Akiyama and Hana.

I don't think I'd want a full game based around it, though.

"

" Hot damn, YES! "

Hell yes, they should.

" @Abyssfull said:

" God I loved the Karaoke in this game, and Yakuza 3 before it. One of my favourite minigames of the series, and introduced me to so much awesome J-pop <3 My favourite would be the duet between Akiyama and Hana.

I don't think I'd want a full game based around it, though.

"

Well not a 60 dollar game. How about a 20 dollar Downloadable game that has a like 30 more of these insane j-pop songs. "

" @kingzetta said:

" @Abyssfull said:

" God I loved the Karaoke in this game, and Yakuza 3 before it. One of my favourite minigames of the series, and introduced me to so much awesome J-pop <3 My favourite would be the duet between Akiyama and Hana.

I don't think I'd want a full game based around it, though.

"

Well not a 60 dollar game. How about a 20 dollar Downloadable game that has a like 30 more of these insane j-pop songs. "

Maybe if it had the Yakuza cast.. one of the best parts was also seeing these characters you knew and enjoyed having fun with these cheesy and catchy tracks. Damn shame that stubborn shit, Saejima, wouldn't go. It's understandable for his character, but still would like to see which song he'd pick out ;P "