Underrated to whom, is a/my question! Lancelot and Peeping Tom are considered masterpieces in some circles (see for instance Kristin Thompson's analysis of Lancelot in Breaking the Glass Armor; Laura Mulvey's commentary on the Criterion [?] DVD of Peeping Tom).

Aside from SHOWGIRLS (which I will keep mentioning in order to provoke an argument that is yet to occur), what do people think of:

I WALKED WITH A ZOMBIE
ATTACK!
HISTORY IS MADE AT NIGHT
SAHARA
HOUR OF THE WOLF
QUEMADA!