I would recommend Spotify.com. It's a great way to find new music. I found some great reggae mix lists on there and discovered some new groups.

I'm really liking the "Wailing Souls" (Jah Jah give us life) right now and "Toots & the Maytails" (Pressure Drop). Both bands have really catchy Old Skool reggae/Ska tunes. As far as recent music, All of the Marley brothers have great music (Stephen, Ziggy and Damian in particular)

I'm also interested in finding some new music, So I'm looking forward to reading all the responses to this thread.