for me when i act i seem to completely tap into someone else and loose myself. its really odd, but difinately nice because i'm not shy or anything when i perform. i've had the same experience with ocd, and i guess it somewhat has to deal with the fact that i'm occupying myself with something, which gives me less time to obsess, and in "becoming" someone else i sort of loose that part of myself. still, it is very bizarre.