The Adventures of Buckaroo Banzai Across the 8th Dimension

Brilliant brain surgeon Banzai just made scientific history. Shifting his Oscillation Overthruster into warp speed, he's the first man ever to travel to the Eighth Dimension... and come back sane! But when his sworn enemy, the demented Dr. Lizardo, devises a plot to steal the Overthruster and bring an evil army of aliens back to destroy Earth, Buckaroo goes cranium to cranium with the madman in an extra-dimensional battle that could result in total annihilation of the universe!