I have a feeling many states are going to re-examine their Make My Day laws in light of the George Zimmerman trial. Zimmerman was acquitted of murder because of Florida's Stand Your Ground version of the Castle Doctrine. Even though the victim, Trayvon Martin, had no weapon on his person, Zimmerman argued that the young African-American man confronted him after a brief interrogation.
The difficulty with any such law is the requirement of a declaration before action. The intruder has to penetrate the person's home, and clearly intend to commit a criminal act. The homeowner is supposed to feel so threatened that deadly force becomes an option. There is also supposed to be a verbal warning before pulling the trigger or swinging a bat.
The problem I have is that only two people will ever truly know what took place that night, and one of them is dead. The jury has to take the word of the homeowner that all of those elements were met.