My apologies if this has been done, but I felt like doing this. Besides, I had a look, and didn't notice a thread on this.

Half-Life's headcrabs, Aliens vs Predator's facehuggers, System Shock 2's cyber-monkeys. Halo's Flood spore-thingys. These are all things I find really really annoying. Nothing like walking happily along when shwap a facehugger attaches to your face.

Zombies are pretty much the only things that ever worry me unduly - I don't know why - it's just because they're so wrong or something. Ha. I'm zombiephobic.

Now, I'm wondering what little creatures members of this forum have similar problems with.