birth_place birth_date article_title name occupation
los angeles , california , u.s. 16 october 1949 david greenwalt
 david greenwalt screenwriter , television producer , television director
david greenwalt

david greenwalt -lrb- born october 16 , 1949 -rrb- is an american screenwriter , director and producer .
he was the co-executive producer of `` buffy the vampire slayer '' and co-creator of its spinoff , `` angel '' .
he is also co-creator of the short-lived cult television show `` profit '' .
he co-created the nbc supernatural drama `` grimm '' .
