Let's end the last-name pronunciation debate once and for all 

Let's parallel this debate with a similar situation in English.  In the English language, there are some names pronounced differently in the United States than in the United Kingdom.  A good example is the name Maurice.  Maurice Gibb, of the Bee Gees, pronounced his name the British way "MOR-ris".  Meanwhile, Maurice White of Earth, Wind & Fire pronounces his name the American way, "More-EES".  I believe we should use the pronunciation that García Bernal himself personally uses, seeing as it is his name.  Therefore, the correct pronunciation would be "gar-SI-a".  After all, a person can choose however they want to pronounce their own name.  If he starts pronouncing his name the Spanish way "gar-THi-a" then I would agree that it is pronounced like that.  But until he changes the pronounciation himself, we must use HIS pronounciation.24.171.52.43