Dear Bebel,
Your son is doing what many toddlers do. They can be pretty determined, but you have to be the voice of reality and reason. When your son is aggressive, time him out in his crib or playpen. And at night, by all means stop taking him into bed with you. You've got to be firm about this. Every time you take him from his crib, you are reinforcing and encouraging the very behavior you want to stop. There's no need to be scared of his behavior, rather put your energy into responding to it with reasonable limits. Your behavior can help your son adapt to the limitations of the real world. Remember, he's just a child - he needs your help.