Anything alive scares me.
Also, I don't know if such a phobia exists (I haven't looked at this entire thread yet) but sometimes I can't stand looking at fish. Or even birds. When it comes to fish, I always think they're going to explode or something with their big eyes and scaley-ness... And birds? I always think of their tiny little eyes chipping off and their necks spontaneously snapping off is ejeklhkjjk. It's a shame because they're so pretty. But in Biology a few months ago we saw a bird video and there were these creepiest red birds who made the scariest sound ever. Oh gee.
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I also get creeped out about outer space. I'm perfectly capable of listening to Cosmos by t.A.T.u., I just don't like the thought of a big, black, massive open space above of me. Heh.