Another vote for Exorcist III, great film.
Wes Craven's New Nightmare is severely underrated as 90s horror goes. Craven's meta-test for Scream, it is superior both to that film, and most of the other Nightmare movies.
I second both motions. Exorcist III
, it should be noted, was based on William Peter Blatty's novel Legion
and is definitely worth seeing.
And New Nightmare
is quite clever. (I actually edited the novelization, which was very first movie tie-in I ever worked on. How time flies!)