While Sundance is traditionally focused on the importance of looking to the future of American film, a lineup filled with more first-timers than any other major festival, this year has been all about looking back. There are misty eyes over the loss of founder Robert Redford along with host state Utah and also for the many films that have premiered here over the years. Alongside more retrospective screenings than one usually expects, even the new films have a touch of old Sundance to them.