Which 1995 film inspired a TV series starring Annie Potts as an inner-city schoolteacher?

Which 1970s film, based on Erich von Däniken's book, proposed that ancient Earth was visited by aliens? Which Mafia underboss became the government's star witness against John Gotti in 1992? Which 2002 film, based on Maori writer Witi Ihimaera's novel, follows a girl's dream of becoming chief of her tribe? In the 1990 U.S. census, which color was also the fifth most common last name? Based on the calculations of French mathematician Urbain Le Verrier, Johann Galle discovered which planet in 1846? Based on Xavier Roberts's soft sculptures, which dolls were a hugely popular item for "adoption" in 1983? What basic material is used to make casts for broken bones and sculptures? Military basic training is also known by what nickname?