Heights, the big slide at a local park that my 3 year old loves yahooing down, cramped spaces, crowds, big fat chunky spiders, laying my hand or foot off the side of the bed, driving in San Francisco with a stick shift, LA traffic.
When I close my eyes in the shower, I'm convinced someone/thing will be standing there looking at me through the glass door when I open my eyes. DH thinks I watch too many horror movies.
Ugh. I realized recently that when I shower, I keep an elbow or a finger touching the shower door the entire time. That way, I can feel if someone tries to open it when my eyes are shut. Never mind that I have two yappy little dogs who'd instantly alert me to intruders.
Lol! I totally rely on the pups if I'm nervous about an intruder. I calm myself by saying that they would be going nuts if there was someone in the house right now. Usually works.