As a superhero icon, DC's Superman has naturally received his share of cinematic adaptations. Which film is the best?

This collection includes the original superhero film series of the DC Comics character Superman starring Christopher Reeve and the fifth and final installment, Superman Returns, from 2006.

Christopher Reeve was perfectly cast as Clark Kent/Superman in four movies, but which of his outings as The Man of Steel stands as the best?

It also doesn't include the 1984 film "Supergirl" which takes place in the same universe as the 1978, 1981, 1983, and 1987 ...