Either David Lee Roth doesn't know Ozzy Osbourne guitarist Zakk Wylde or he has already reverted to his rock-god status of yesteryear.

At the last of four secret rehearsals a reunited Van Halen held in Los Angeles on Sunday night, Wylde, who was joined at the event by fellow rock stars Tom Morello of Rage Against the Machine and Metallica's Kirk Hammett, attempted to climb onstage from the front row but was held back by security.

At that point, Roth walked over to Wylde and said, "Nah, nah, nah. Are you in show biz? Then get off the stage. Get off the f***ing stage."

Guitarist Eddie Van Halen, whose rehab stint delayed the band's tour and who Wylde has called the greatest guitarist of all time, acknowledged Wylde and then tore into a guitar solo before an audience of nearly 500 people.

It was a signature moment for Roth (see video below) in what many who have attended the rehearsals say is sure to be an amazing tour. The band has added several dates since its initial announcement last month, and shows in Detroit and Charlotte and two in Toronto have sold out.

The tour will be the band's first to feature Roth since the motormouthed frontman left the group in 1985. Ironically, the tour will not feature the group's original lineup, because Van Halen has replaced original bassist Michael Anthony with Eddie's 16-year-old son, Wolfgang Van Halen.

Van Halen tour dates:

9.27 Charlotte, NC - Charlotte Bobcats Arena (sold out)

9.29 Greensboro, NC - Greensboro Coliseum (on sale now)

10.1 Philadelphia, PA - Wachovia Center (on sale now)

10.3 Philadelphia, PA - Wachovia Center (on sale now)

10.5 Uncasville, CT - Mohegan Sun Arena (on sale now)

10.7 Toronto, ON - Air Canada Centre (sold out)

10.10 Cleveland, OH - Quicken Loans Arena (on sale now)

10.12 Toronto, ON - Air Canada Centre (sold out)

10.14 Indianapolis, IN - Conseco Field House (on sale now)

10.16 Rosemont, IL - Allstate Arena (on sale now)

10.18 Chicago, IL - United Center (on sale now)

10.20 Detroit, MI - Joe Louis Arena (sold out)

10.22 Auburn Hills, MI - Palace of Auburn Hills (on sale now)

10.24 Minneapolis, MN - Target Center (on sale now)

10.26 Kansas City, MO - Sprint Center (on sale now)

10.28 St. Louis, MO - Scottrade Center (on sale now)

10.30 Boston, MA - TD Banknorth Garden (sold out)

11.1 Washington, D.C. - Verizon Center (on sale now)

11.3 E. Rutherford, NJ - Continental Airlines Arena (on sale 9/24)

11.8 Uniondale, NY - Nassau Coliseum (on sale 9/24)

11.10 Montreal, QC - Bell Centre (on sale now)

11.13 New York, NY - Madison Square Garden (on sale 9/24)

11.20 Los Angeles, CA - Staples Center (on sale 9/24)

11.23 Glendale, AZ - Jobing.Com Arena (on sale now)

11.25 San Diego, CA - Cox Arena (on sale now)

11.27 Sacramento, CA - Arco Arena (on sale 9/22)

11.29 Fresno, CA - Savemart Center (on sale 9/22)

12.1 Portland, OR - Rose Garden (on sale 9/22)

12.3 Seattle, WA - Key Arena (on sale 9/22)

12.5 Vancouver, BC - General Motors Place (on sale TBA)

12.7 Calgary, AB - Pengrowth Saddledome (on sale TBA)

12.9 Edmonton, AB - Rexall Place (on sale TBA)

12.16 San Jose, CA - HP Pavilion at San Jose (on sale 9/23)

12.18 Anaheim, CA - Honda Center (on sale 9/24)

12.22 Oakland, CA Oracle Arena (on sale 9/23)