Jack-in-the-Box Zombie. Simply because of last night.
I got to the end of stage 4 and was ready to play, when suddenly the garden turned dark and I became blind. The only glimpse of the screen was through infrequent flashes of lightning. I managed to stay calm at first but panic quickly rose as I heard multiple splashes in the pool. I throw all the plants that have come along the conveyor belt as quick as I can and managed to defeat them, only losing a few plants. Then a huge hoard of zombies approaches, plants are being eaten everywhere and somewhere in the darkness of the garden, I hear Jack-in-the-Box Zombie's cheery Pop Goes the Weasel tune. Under the cover of darkness, during a zombie invasion it is the creepiest thing I have seen and heard. I am not ashamed to admit I freaked right out. It was the most scared I'd been in a game for awhile.