Recreation has just the ticket for cooped-up movie fans. Free weekly drive-in movies launch tomorrow night at Rossmoor with the 1973 coming- of-age classic, “American Graffiti.” The movie will be shown on a giant inflatable screen in the Hillside Clubhouse parking lot at 9 p.m. “Drive-in movies at the park or the pool are something I’ve thought about over the years,” said Recreation