ok some mentioned are good, here some really fuckin good old reggae
Third World
Burning Spear
Steel Pulse
Smiley Culture
Lee Scratch Perry
Linton Kwesi Johnson
Augustus Pablo
Sly Shakespeare and Robby Dunbar aka Sly and Robbie
Militant Barry
King Tubby Meets rockers inna firehouse

A couple of really cool reggae movies are "Rockers" and "Countryman". Rockers features burning spear and a couple of other mighty cool tracks country man is a mix of bands.