Flex have a brilliant article in in this month for shoulders - it goes into exact form on most exercises and which/how it works each muscle - the shoulder exercise that shouldn't be out of anyone's shoulder day is the DB seated press imo - has to be done right though with the bench inclined very slightly - can't be 90 degrees - and no meeting of the DB at the top - this keeps it more on the shoulders than the triceps - and make sure u touch ur shoulders at the bottom of the movment - best shoulder mass and strength builder imo
