Some good fears I found on Phobia Guide

Amychophobia - Fear of scratches
Arachibutyrophobia - Fear of peanut butter sticking to the roof of the mouth.
Blennophobia - Fear of slime.
Eurotophobia - Fear of female genitalia.
Hobophobia - Fear of bums or beggars. (Derek had this for awhile until he met Charlie).
Panophobia or Pantophobia - Fear of everything.
Papaphobia - Fear of the Pope.
Syngenesophobia - Fear of relatives.