Without reading the other responses first, my opinion of thes moves are that while they may be effective on the street with an untrained opponent, they are all too often a mental crutch. Would you rather poke a guy in the eye or... get off the line of attack, cancel heighth, width, and depth. If your answer is Eye Poke you are on the wrong path.Eye shots, groin hits, biting...all seem to be worth while things to do if the situation was right. All are pretty much found in every art. Take a look at a self defense technique, and you're bound to see at least one if not more than one strike I mentioned.
However, many times, people will say that those shots are too difficult or impossible to practice, they can't be tested, and the list goes on and on and on.
So...I'm interested in hearing everyones thoughts on those moves. Do you feel that they're effective tools? Do you feel confident in being able to apply them or pull them off in a SD situation? Do you train them?
Sean