When assessing what present and future filmmakers can learn from David O. Russell’s ideas and practices, it really depends on which David O. Russell we’re talking about. Is it David O. Russell the mad genius auteur, who was as notorious for insisting on his vision as he was for getting in much-publicized spats with actors on set? Or is it David O. Russell the comeback king who, with this weekend’s American Hustle, seems all but guaranteed a third critically lauded and commercially successful film in a row? In several notable ways, the themes of David O. Russell’s films haven’t changed all that much – he’s still as preoccupied as ever with depicting various types of dysfunctional, untraditional, and ultimately affirming oddball “families” – but his filmmaking has changed greatly, a switch that he chalks up to lessons learned from the troubled shoot and reception of (the still-underrated) I Heart Huckabees as well as his unfinished film Nailed. Whatever you think of Russell’s films, he’s found himself in a position to speak about filmmaking from an encyclopedia of experiences (good and bad) and attitudes (egotistical to humble). So here’s a bit of free film school (for fans and filmmakers alike) from the guy who got Bruce Wayne and Katniss Everdeen their first Oscars.