Let's see... spiders, snakes, bees (cause I'm allergic), heights and flying. Complete phobia of flying, don't mind roller coasters cause by the time I realize I'm at the top I'm already back down at the bottom! Ferris Wheels though scare the crap outta me. They just are to high and move to slow. Bridges and cliffs/mountains etc. are fine so long as I'm not on the edge looking down.
Oh and having someone try and take my gun away!