Some others besides what was already said (all great suggestions too btw)....sorry if I repeat any ones already mentioned....
Freddie McGregor - I got a few of his cds (the guy has 20+ releases) but my favorites are Come On Over, Bobby Bobylon, and Big ship.
Bunny Wailer - Blackheart Man (Classic Reggae album), Liberation, Roots Radics Rockers Reggae
The Abyssinians - Forward (great album)
Junior Murvin - Police and Thieves...one of my favorite Reggae albums..
The Itals - Brutal Out Deh and Rasta Philosophy
Burning Spear - Man In the Hills, Hail H.I.M., and Resistance
Culture - Two Sevens Clash (another of my favs.), International Herb, Good Things and Harder Than the Rest
I like some newer Reggae artist but I am more of a fan of older artists like the ones above...
Hope you enjoy their music as much as I do...
Nuttkace