Norman Wisdom's
What's Good For The Goose. The sight of Rupert Pitkin bopping to the Pretty Things is a terrifying image.
Seriously
Witchfinder General,
Blood On Satan's Claw,
Haunted House Of Horror and
Neither The Sea Nor The Sand would be my favourites. Also have a soft spot for
The Sorcerers and
The Creeping Flesh.
The worst Tigon films for me would be
Zeta One and
The Body Stealers.
The Blood Beast Terror works (unintentionally) well as a comedy.