I've always thought it would be fun to teach something like engineering physics.  It just doesn't pay enough.
When my i s c & a aggie wife was preparing to go to PT school, she lacked a couple of prerequisites and had to take them at the local CC.  I tutored her through both Chemistry and Physics, and not only did she do extremely well, but she really liked both subjects, and especially physics.  She thinks I'm a natural teacher.