Lomu was pretty remarkable, it was a huge pity that his career was hurt so much by kidney problems. He was only 20 in the first video, but that was pretty much the peak of his career as his health deteriorated. Still a very effective player for a long time though, just not the force he could have been.
Some All Black clips
John Kirwan in 1987
Christian Cullen
Cullen again
Dan Carter tearing up the British Lions
The fastest man in world rugby
Brian Habana
and probably the best of the Fijian wingers, though pronouncing his name is a challenge
Rupeni Caucaunibuca