Child Actor.-Edited

OK, I need some input from anyone who is willing to share! I have a child who "acts" out all the time. Yes, we have tantrums and normal kid stuff, but we also have the pretending to be someone attitude! He is constantly acting as someone else. Does anyone know what I should be looking for in my child in order to know if we should pursue acting? Or am I looking at normal kid behavior? He repeats lines and repeats motions as if he were practicing for an audition. If acting is a possibility, then what should I be looking for in a school?

Added to say: So I asked Nicolai this morning if he wanted to do acting and he said no. He wants to be a police officer when he grows up. He asked if he had to get up as early as Daddy does to go to work and I told him that sometimes even earlier. He then asked if I would be alive when he was a police officer to help him set his alarm clock and wake him! Oh boy!! (That will definately go on the list of things to teach him before he leaves the nest!)