With her tetchy screen persona, Sandra Bullock is well served by brainteasers like The Lake House and this passable thriller about a woman who seems to be bouncing between alternate realities. One day her husband dies in a car crash, the next morning she wakes to find him still alive, the morning after that she’s back to being a widow, etc. Once she figures out what’s going on, she sets out to reconcile the two scenarios. Doesn’t she know variety is the spice of life? Mennan Yapo directed; with Julian McMahon. PG-13, 96 min.