The color out of Space[1] is pretty good! However the Dunwich Horror[2], The Shadow over Innsmouth[3], At the Mountains of Madness[4], and of course, the Call of Cthulhu[5] are all good.

[1] https://www.youtube.com/watch?v=TXyda5iiGEo

[2] https://www.youtube.com/watch?v=gKkya1pMhMQ

[3] https://www.youtube.com/watch?v=gviofDcypzE

[4] https://www.youtube.com/watch?v=e2iSmE129uQ

[5] https://www.youtube.com/watch?v=XM9Z39D1yyI