What movie, written by Adam Herz, was a box office hit that spawned three sequels and a bollywood flop?
Yeh Kya Ho Raha Hai?: Yeh Kya Ho Raha Hai is a 2002 Bollywood comedy film. American Pie (film):  The film was a box-office hit and spawned three direct sequels: "American Pie 2" (2001), "American Wedding" (2003), and "American Reunion" (2012).
i don't know