To make things better, the entire film was acted by drunk actors. And the results are pretty hilarious (as well as pretty successful, all things considering).
One only has to look back at the golden years of Hollywood to remember that every actor would often loose themselves in an alcoholic mist; icons such as Richard Burton, Oliver Reed, Peter O'Toole would normally prove hard to work with such was their devotion to the drink.
If only film-makers back then had just decided to shoot the whole movie with their actors inebriated. Cleopatra would have been a much more impressive spectacle.