Watched this at the weekend. Loved it – well the bits I could watch without covering my face and watching from the gaps in my fingers! Really creepy and atmospheric, and wasn't expecting it to end the way it did. Have seen three of Guillermo del Toro's film and not been disappointed yet.
Only problem is I've been freaked out by it since then and can't sleep properly!! The scenes with Tomas in the mask (where he's standing at the end of the hall, and the mother is in the bathroom) and the bit where the mother is in bed, and something gets in beside her, but there's nothing there play on my mind in the early hours of the morning :-O