Let's met Bost & Bim, an american reggae composer & producer duo that released more than 100 reggae-style remixes of great pop and rock songs.
Listen to jamaican Boy (feat. Brisa Roché & Lone Ranger) their latest production - a sort of revisited jamaican version of the "overused" hit American Boy by Estelle feat. Kanye West.
Another interesting group that reworked a lot of hit with a soul and reggae style is The Dynamics, from Lyon (france), produced by Patchworks.
Listen to Seven Nation Army (White Stripes cover)
and Whole Lotta Love (Led Zeppelin cover).