Bloodthirsty Butchers (1970) 
Andy Milligan does Sweeney Todd as only Andy Milligan can, with plenty of sleazy shenanigans, bad accents, and mutton chops galore.
However, beneath the thin crust of abject silliness lies a dark, and at times brutal filling, and a curious ensemble of characters to match. The film is quite 'talky', which some may find dull at times, but these long-winded conversations just added to the film's offbeat charm (for the most part) for me.
Milligan is definitely a director you either click with or don't, and the more of his films I watch, the more I enjoy what is served up to me.