Splatterhouse has some pretty freaky bosses. One boss, you get to kill, by ripping it's spine out through it's anus. Then that boss becomes a normal enemy. Lulz.
The bosses in Resident evil 5 were kinda freaky like the huge one on the first level i think hi was a big tall thing with a giant axe and something on his head.
Not so much the Head Crab as to what the Head Crabs be come, I think the skinless zombies are pretty **** creepy. That said, "We don't go to RavenHolm" is the creepyest level in HL2.
I always hated what the boss looks like in "Rengekou: The tower of Purgatory" with all it's freaky body parts equipped with guns and blades which mostly looks like what Gamer posted.
the tentacle monster zombie thingy from res evil 5 and the first one is called the executioner just so you know and i luved how they put it in the new resident evil movie http://projectumbrella.net/files/images/uroborosrender.jpg
Rofl, I just run up to them and shoot them in the back of the head, or, if I'm feeling dangerous, I light them with a molotov and charge up meh chainsaw
omg witches theyr hilarious one time me and my friends dodged one and left it there since it was in l4d1 it just stayed there well this was on the lvl where you escape on the airplane right by the parking lot safe house so i had a sniper and could see the witch so i was like wuik everyone in the safe house ill shoot the witch and then well wait till its just by the door then close it we did and it was so hilarious