Tesis is Amenabars 1st film!!!!
How many times have we had a director whos first film is such a success as Amenabar's Tesis?
You cannot compare Tesis with Open Your Eyes, The others or Sea Inside, it is unfair as it was his first and with a very low budget.
His second, Open Your Eyes gave me the most enthralling cinema experience ever. The ending is so powerfull that I was walking on air 30min after.
Mar Adentro (the Sea Inside) is his latest and a real master piece.