James Franco is now putting his nascent Twitter account to good promotional use: He just posted an arty, behind-the-scenes montage from Oscar rehearsals (does Hipstamatic have a video function?), and it gives away a teeny secret: As part of their cinematic time-traveler montage that will open the Academy Awards, Franco and Anne Hathaway are re-creating “You’re the One That I Want†from Grease. Yes, they’re in costume, and yes, this is your best chance to see Anne Hathaway in a skintight black outfit until The Dark Knight Rises. And they’re having such fun! (Is their chemistry reminding anyone else of the Rachel-Blaine duet on last night’s Glee, with Hathaway’s overachieving, type-A singer paired with a sexually ambiguous, handsome dark-haired guy famous for playing gay? No, just us?)