I know most of the bollywood movies are copycats of foreign movies..
But director of Ghajini mentioned in all of interviews that he made Ghajini after getting inspired by memento.. He used similar theme and changed it to entertain indian audience.. Atleast he told the truth unlike the other indian copycats..
Most of the hollywood movies are based on some novels.. Thats why they are original..
Apart from english I watch spanish, italian, french, german, potugese, danish, swedish, finnish, russian, turkish, mongolian, chinese, japanese, thai, korean, tagalog, malay and lot many languages movies..
There are many hollywood movies which are copy cats of foreign movies..
Hollywood cannot be compared to bollywood.. Bollywood movies doesn't have any standards except few movies..