Small-town New Jersey can be a petri dish for some pretty big dreams. That’s certainly true for Patti (Australian actor Danielle Macdonald), the gutsy heroine of writer-director Geremy Jasper’s affable debut, Patti Cake$. Patti’s a rapper–her stage name, at least if she can ever reach an actual stage, is Killa P–and she longs to escape her drab life in an even more drab town, a place that seems designed to kill dreams.