I collected mostly horror titles for a long time. I did finally start branching out more after having owned most of the horror games I really liked. There's still a few of the more rare ones I never managed to snag, but would love to own some day. There totally needs to be more straight horror (not rock n roll, tongue in cheek, cartoony, etc) themes. The only three I can think of from the last 30 years are BSD, MC and TWD.
Still have:
America's Most Haunted
Scared Stiff
The Walking Dead
Bram Stoker's Dracula
Mystery Castle
Ghostbusters (custom)
Owned in the past:
Class of 1812
Tales from the Crypt
Elvira and the Party Monsters
Ghostbusters (Stern)
Monster Bash
Rob Zombie