I just discovered Just Jack this weekend. I love the fresh dancy sounds. There are some hip-hop rhythms that you can pick up but it is very dancy and fun.
Jack said it best himself, "I never had heroes and never wanted to be like other musicians", he says. "I have no affiliations to anyone, I'm not part of a gang, I'm not a part of a scene and I don't have a sound that's obviously a part of a scene. I'm Just Jack."
The sound does not fit neatly into a genre...it is Just Jack. There is a bio on last.fm and be sure to visit Just Jack's website. The newly released album Overtones is wonderful. My favorite song Starz in Their Eyes makes me want to dance! Enjoy!