Not a phobia of mine, but I can sympathise with socks in bed, it's just skeevy and gross!
That said, I drive my partner mental because I can't have my feet uncovered while I sleep. I curl the doona around them, and coz he's so much taller than me, his feet are uncovered pretty much from the shins down.
I also have an irrational fear of camels, pelicans and emus. Not a paralysing fear or anything, it's more of an intense hatred, if one came too close to me I'd punch it repeatedly until it went away.
The wierdest one I've got though is a phobia of having my shoes fall off while on a rollercoaster. I practically cut off the circulation to my feet by tying my shoe laces super tight everytime I go on one.