Michael Jackson Planning Moonwalk-Eclipsing Move

'High School Musical' director Kenny Ortega helping King of Pop one-up his signature slide.

[artist id="1102"]Michael Jackson's[/artist] moonwalk is arguably the most iconic dance move to ever hit a concert stage, but it looks like the King of Pop is hoping to one-up his signature slide — with the help of "High School Musical" director Kenny Ortega.

In preparation for his upcoming 50-show stint at London's O2 Arena, Jackson has been holed up at a warehouse near the Burbank, California, airport rehearsing with Ortega and a team of renowned choreographers, according to the Los Angeles Times.

The highly anticipated tour has been threatened by a lawsuit, but that hasn't stopped the pop star from planning an over-the-top, true-to-MJ-form production.

"It's going to be the biggest, most technologically advanced arena show — and the most expensive — ever mounted," Randy Phillips, chief executive of concert promotion company AEG Live, told the newspaper.

As for the top-secret sequel to the moonwalk, Phillips said he was "sworn to secrecy" but that Jackson is working closely with Ortega to deliver a memorable move everyone will be talking about.

Ortega has worked with MJ in the past, collaborating with him on his Dangerous and HIStory tours. Ortega was quick to sign on to direct the shows, even working around his commitments to the "Footloose" remake.

"My answer without a beat was nothing could keep me away," Ortega said in a statement, hailing MJ as "the greatest entertainer of our generation."

The 50-show run kicks off at the O2 Arena on July 8.