Personally, Last Shift (2014). It was a smaller budget movie that came out awhile back that not many seem to know about. One of the only movies that actually got under my skin in recent years showing budget isn’t always everything. The director remade it recently with a bigger budget but you can skip the remake it’s not as good. Any other recommendations?
John Carpenter’s Prince of Darkness. Really cool premise with a cameo from Alice Cooper, and some neat practical effects
I put off watching Prince of Darkness for ages and when I finally did, it gave The Thing a run for its money as my favourite Carpenter. Also it got me to watch Quatermass & the Pit which I loved too.