EFX was a Las Vegas Strip production show residing at the MGM Grand Hotel & Casino which opened on March 23, 1995 and closed on December 31, 2002. When it premiered, it was the most expensive and largest-scaled theater installation in the world. A significant entertainment landmark of the strip for nearly eight years, it was known for changing its headline star every two years. Performers in the lead role were Michael Crawford, David Cassidy, Tommy Tune, and Rick Springfield.