I saw over 50 screened films last year (festivals, film societies etc) and one of my favourites was indie Another Earth.
A perfect duplicate of the Earth appears in the sky on the day that MIT student Rhoda (Brit Marling) crashes her car killing a family, save for music professor John Burroughs (William Mapother).
On her release from prison, Rhoda inveigles her way into the home of the grieving Burroughs, as a competition is launched for a prize ticket on the first trip to Earth 2.
As Rhoda quietly tries to work out some kind of redemption, the second Earth hovers above as a ghostly doppleganger, suggesting the possibility of paths not taken, of shadow lives.
The imagery is beautiful and never overstated. It's one of those films that leaves a resonance with you for days and longer...