Oblivious Maximus
I am the worm
Two great choices. Hatchet is a really good serial killer flick, one of the best of its type to pull a bit from the Psycho playbook. It clearly had to be somewhat of an influence to American Psycho in some regards too. Lisa is full on illogical dream horror like the Italians do best. A masterpiece really. Did the version you get come with the alternate cut House of Exorcism? An interesting curio to say the least, but the original cut is in a league of its own.These are the two I picked up yesterday, good to know you rate them highly! $12 well spent in that case.
Bava's Planet of the Vampires is also worth seeing, although it really should be called "Planet of the Zombies". Watch it back to back with Alien and the influence is obvious. I'll also give a recommendation for Roy Colt and Winchester Jack. Bava only did a few westerns and none are fan favorites as he more or less admitted to having no real interest in the genre and doing them for the paycheck but Roy Colt sticks out a bit because its a parody. Completely frivolous but a fun send-up nonetheless.