What Is The Opposite Of Nostalgia?

At times Nanette Burstein's documentary American Teen seems staged, and it times it seems like Mean Girls, but eventually the film makes you remember just how dramatic high school really is-- the romance and sports and college application process and cliques-- and just how heavy the future and the past (i.e. parents) weigh on the American teen; perhaps the scenes that appear to be contrived are actually just awkward, painful, and melodramatic, and from the perspective of age, they feel too raw and ugly to be real . . . you'll have to watch it and judge for yourself, but beware of the feelings this movie will dredge up: nostalgia and it's ugly counterpart, regret.