There are more obvious underrated movies, but one that rarely gets mentioned is Brotherhood of the Wolf with Mark Dacascos and Vincent Cassel. A mix of opinion

There are more obvious underrated movies, but one that rarely gets mentioned is Brotherhood of the Wolf with Mark Dacascos and Vincent Cassel. A mix of opinions at the time, a few comments about genre confusion, but personally I'd say forget about all that and just watch it on loud in a dark room. Atmosphere by the ton, and massively entertaining.