Emergency Procedures

How many of you have memorized all the emergency procedures. The only one I
really know is the engine failure procedure. I have to admit, if any other
emergency was to develop I think I'm unprepared and it's time I do some
re-familiarization of procedures.

On a side note, I'm a bit confused about a partial engine failure. Say the
engine loses a valve and runs VERY rough. Should I continue flying with that
engine in hopes of making a runway, or shut the engine down to prevent it
from ripping itself off the airplane and turning me into a large paper
weight.

Thanks,
Ryan