The Ghost: The Judge (John Astin)

Helpful How? Peter Jackson's last film before his career transitioned into making The Lord Of The Rings, it didn't exactly spook the box office, which is a shame because it's ace.

Astin is a highlight as a sharp-shooting, grizzled Old West sheriff , one of the spectral types that help out Michael J Fox's Frank Bannister, a huckster who uses his spooksome pals also including Jim Fyfe's nerd and Chi McBride's Cyrus) to haunt houses, which he then "exorcises".

The dead gang also come in handy when a truly dangerous killer (Jake Busey) comes back from beyond the grave.

Frightening Fact: Michael J Fox just couldn't stop referring to The Judge as "Doc". Someone clearly needed to tell him that the Back To The Future movies were over.