As for the mood thing, with my character that I have at this moment, I cant do that. Simply because she is in a whole different mind set than me. If the character was somewhat close to me as a person, sure. But I will say that if a character is sad or what have you, yes I feel that energy and it gets to me, but not vice versa. As for celeb I can understand that, but at the same time not. I mean if you dont have anything to go off from, or dont have an idea or direction, then sure try it out. But I wouldnt go as far as all the time, because then the character wouldnt be the character, it would be you.
For those with a new sickness and such everyday, I say Im staying away from that kind of drama. Some of those get way too carried away and thats when I draw the line.