Can I use your phone? http://greatlakesstudentloans.in.net/ mygreatlakes.org  Fest-goers were also buzzing about: “Joe,” with a bearded, scruffy Cage playing the unlikely mentor of a 15-year-old boy in director David Gordon Green’s film; “Blue Ruin,” a taut, nightmarish revenge thriller in the mode of “Blood Simple”; and “Filthy Gorgeous: The Bob Guccione Story,” a documentary on the gold-chain-wearing Penthouse magazine publisher whose skin mag once rivaled Hugh Hefner’s Playboy.