Creepshow 1 and 2
The Creepshow series is like the original 'Tales From the Crypt' (which is also well worth watching). It is a compilaiton of short movies interconnected by a host segueing in between them. While Creepshow might not be 'scary', it is, as the title insists, creepy. For Creepshow I, the short to look out for is called 'They're Creeping Up On You', which will definitely have you squirming in your seat! Warning: If you have an extreme fear of bugs, pass up on this. There are a lot of formerly large stars in this including: Leslie Nielson, Ted Danson, and Stephen King among others.
Creepshow II is a great extension of this series with many more creepy shorts. In this one, look out for 'The Hitchhiker'. This is a great little creepfest featuring a victim of a hit and run who just won't die before he gets a ride.
Saw 1 and 2
Ok, so I know a lot of people are sick of Saw because of all of the sequels, but hear me out. 1st, part of what makes horror movies great is the fact that the killer doesn't die and you get to see him (or her) kill over and over again. 2nd, as far as originality in a horror movie goes, Saw is right up there near the top
3rd, this movie series actually holds sentimental value with me. Sounds ridiculous I know, but on October 29, 2004 I took Mrs. Caped on our first date. Being the romantic that I am, that date was to see Saw (hahah- seesaw). Anyway, YES, she still ended up marrying me. So the Saw series became a running point of humor in our relationship. We call it our anniversary movie because every year since, there has been a sequel in the theater during our anniversary.
Ok, so if you can get past Danny Glovers horrifically terrible acting, Saw 1 is a smart and fun ride. The death scenes are creative and the plot has great twists.
Saw II (my favorite in the series) is more of the same but it pits a group of criminals together in a house. Get ready to cringe and gasp about 30 seconds after one of the criminals uncovers a hole in the floor full of syringes.