# “Adventureland”: Greg Mottola’s lovely memory of a misspent summer at a tacky Pittsburgh amusement park in the early eighties. Kristen Stewart turns those eyes on Jesse Eisenberg, a toothless non-vampire, as he struggles toward manhood. “Up in the Air”: The movie’s many ambitions (to be utterly cool and all heart) don’t quite mesh together, and the last third is actually a little boring. But…