The memorial is part of the history being made in our lifetime.
I don't know. I hate to be the wet blanket on the fire, but I doubt that Michael Jackson really will become recognized as one of the greats in history.
Who was the most popular composer in Europe in the late 1700s? Hint: It's not Ludwig van Beethoven.
Today, ask anyone in the western world who Ludwig van Beethoven was and, even if they're not into "classical" music at all, they will recognize the name and can at least tell you that he was a great composer. Just about everyone in the western world can identify the iconic first few bars of Beethoven's 5th Sympony. Most will recognize as familiar -- if not be able to identify -- the Ode to Joy from his 9th Sympony and Fur elise -- even if only as one of the most popular cell phone ring tones.
Two hundred years later, Beethoven's name and reputation... and also at least some of his music... are known by just about everyone in the western world.
But, believe it or not, he was not the most popular composer of his day. No. That title went to Ignaz Pleyel. Today, Pleyel and his music are all but forgotten, eclipsed by Beethoven. What of this music survives is hardly ever played and even less frequently recorded.
My point? What's popular does not necessarily endure and become recognized as transcending its time unto eternity.
Michael Jackson is very popular... but I doubt that when history makes its cold judgement, he will transcend his time unto eternity.