Dark Star
It looked like Dark Star on DVD was disappearing from the stores, so I decided I had to get a copy. Picked it up for $10 including shipping.
If you’re not familiar with this particular cult movie, all you need to know is: (a) it was written by the same guy as “Alien”, and inspired that movie; (b) it’s a comedy; and (c) it was directed by John Carpenter. If that isn’t enough to get you interested, consider the original poster tagline: “Bombed out in space with a spaced-out bomb”.