If I had to be some one else, Selma Hayek would be my first choice - not because of her hubby though. I just want to be that hot when I'm in my 40's :)
But I feel you on the stranger in your own skin thing. I think it comes with the holiday season and seeing more of family who expects you to be some one you maybe once were but are so far removed from... Its just weird. I have to deal with the Inkgeist@school vs Inkgeist@work vs wife!Inkgeist etc. And recently, I've had to occupy those roles at the same time (parties etc where worlds collide).