Vampire's Kiss is Dracula X/Akumajo Dracula XX. Both the NA and Japanese versions are common (especially compared to the PAL version, or so I hear), although the NA version sells for inflated prices.
I'd like to play Terranigma, but I think at the price the English version goes for, I'm better off trying to play the Japanese version with an FAQ. Though I can see that might not be an option for others.
The Humans sounds interesting. I suppose Daze Before Christmas is fun if you want to see a fire-breathing Santa smack reindeer with his toy sack.