Eclipsed by Reanimator, From Beyond was a sick squishy adaptation of the short story. Some of the scenes in this movie still make me wince.
The Shunned House is a film by Italian director Ivan Zuccon. The narrative of the film includes elements from "The Music of Erich Zann", "Dreams in the Witch House" and the title story. Admittedly a bloody mess, but there are some effective visions of time folding in on itself.
Beyond the Dunwich Horror is best described as a blend of Lovecraft and Italian Horror. This modern day adaptation by Richard Griffiths is low budgeted but fun. Eyes take a beating in this one.
The H. P Lovecraft Collection is a series dedicated to adaptions of Lovecraft's stories. There are some real gems in these collections and some interesting interpretations of the master's work.