No te muevas was excellent, it proved how well Penelope acts when she's not under preassure of big Hollywood studios and forced to make an american accent(which she doesn't do at all).
I must say Volver, the new Almodóvar is fantastic and Penelope is excellent in it.A must see, is one of the few films starring Penelope which I loved(La niña de tus ojos, No te muevas, Volver are all excellent).