1542 - Prom Night

It's hard to imagine that at one point this was considered good horror.  The opening is pretty terrible - I mean it sets things up just fine - but it's so over-the-top.  And then over an hour goes by before this thing actually turns into any kind of a decent horror film.  And I'm being kind by saying decent.  Maybe I'm ruined by the pacing and whatnot of today, but there's nothing even remotely worth recommending about this film for (save maybe the head-roll down the aisle at the end). 
If you think you need to watch this film out of some kind of need to watch classic horror - do yourself a favor and watch some paint dry.  About the same experience. 
Prom Night (Widescreen)