Sandra Bullock, movie actress who has appeared in romantic comedy based on mistaken identity (While You Were Sleeping) and two quirky time-distortion movies. In Lake House (2006) she plays a doctor whose old house is bought by a building contractor - two years before she moved out (they exchange love notes through a time warp). In Premonition (2007) her husband is first alive and then dead on alternate days, on and on until the back and forth threatens her sanity.