Joe Nussbaum and Elisa Bell's bland teen comedy is a real snooze. It's the last day of middle school for Julie (Alexa Vega, of the SPY KIDS series), and while she's thrilled that summer has arrived, the day is bittersweet. Not only is Julie's best friend, Hannah (Mika Boorem), moving away, but super-popular Staci (Sara Paxton) is ditching Julie's more