Interview with the Vampire is a must see. It’s a pretty good film even for those not terribly into the genre. It’s just a good drama on every level; and you’ll never see Kirsten Dunst’s smile the same way afterwards. The others you can ignore—and you should ignore the movie adaptation of Queen of the Damned with great prejudice! Ordinarily I am all about watching bad movies for fun, but some things are better left unseen, and are so bad they go right past being funny about it.
I will see if the others truly are dreadful.