The Giant Behemoth (1959)

Starring Gene Evans, Andre Morell, John Turner, Leigh Madison, Jack MacGowran
Directed by Douglas Hickox & Eugene Lourie
(actor & director credits courtesy IMDB.com)

The discovery of countless dead fish and a gruesome murder near a British port is investigated by atomic scientists, who discover a giant radioactive sea monster is to blame.

This British piece of sci-fi, very similar in form to Lourie's earlier picture, The Beast From 20,000 Fathoms, which showcased the stop-motion animation of Ray Harryhausen, is probably of most interest for effects work by Harryhausen's mentor, Willis O'Brien.  However, the creature in this film doesn't actually show up in animated form until about an hour into the picture, with earlier shots of the monster apparently accomplished via a puppet that is not animated.  Nevertheless, it's a more than effective film, with stalwart leads in Evans and Morell, inventive sound effects, and plenty of satisfying monster action.

The Fearless Vampire Killers (1967)

Starring Jack MacGowran, Roman Polanski, Alfie Bass, Jessie Robins, Sharon Tate
Directed by Roman Polanski
(actor & director credits courtesy IMDB.com)

A professor and his assistant hunt vampires in a remote district, but their efforts continually backfire.

Meant to be something of a comedy, Roman Polanski's film, which also features the director as the professor's youthful assistant, doesn't really have enough humor to qualify, although there are some inspired moments.  The impression one really takes away from this film is Polanski's emphasis on realism, with drab color and grungy-looking sets, and none of the Hollywood polish one expects in films of this type.  The exception is Sharon Tate, whose crimson hair and luminous beauty shines through in her brief scenes, making her real-life murder even more tragic.