Well I don't know any Korean reggae music, but I do know there's Bob Marley and Sean Paul, both of which are absolutely awesome. Then there's Jimmy Cliff, Steel Pulse, Peter Tosh, Ziggy Marley, Bunny Wailer, Shabba Ranks, Inner Circle, Shaggy, Sly and Robbie, Beenie Man, Damian Marley, Lee "Scratch" Perry, and Toots and the Maytals. You might want to check Soulseek to search for the music (you can download the program from
http://www.slsknet.org)