Good old fashioned heights, even watching something on the telly makes me go all sweaty if the camera shows a drop - *ewwww shudder*
also dont' like putting my face under water, had a nasty incident with a very strong tide on a sloping pebble beach and couldn't get out of the water when I was quite young, my dad pulled me out and I really thought I was going to drown, so kinda obvious where that one comes from.
Don't like crawlies, especially spiders, but have got better as I've got older, so don't know if it's really a phobia, more of a strong dislike.