1. A computer-implemented method comprising: receiving a plurality of digital images, each digital image including a plurality of faces of people, wherein a first face of a first person and a second face of a second person are common to at least two digital images of the plurality of digital images; obtaining an identity of the first person; determining, by data processing apparatus, a frequency of appearances of the first person and the second person in the plurality of digital images; deriving a relationship between the first person and the second person based on the frequency of appearances of the first person and the second person in the plurality of digital images and the identity of the first person; forming, by the data processing apparatus, a grouping of the at least two digital images that include the first face of the first person and the second face of the second person into a cluster, wherein features associated with the plurality of digital images include metadata associated with the digital images, wherein the at least two digital images grouped to form the cluster share at least a portion of the metadata, wherein the metadata includes times of capture and geographic locations of capture of the plurality of the digital images, wherein the operations for identifying each of the at least two digital images that share the feature further include: identifying digital images having times of capture within a duration of time; and forming a first cluster of the digital images having the times of capture within the duration; identifying, from among the first cluster, digital images having geographic locations of capture within a region; and forming a second cluster of the digital images within the first cluster, wherein the digital images in the second cluster having the geographic locations of capture within the region; deriving one or more keywords describing the two or more images by analyzing content of each of the two or more images; identifying a theme for the two or more images in the grouping based at least in part on the keywords and at least in part on the relationship between the first person and the second person; and creating a digital composite media presentation of the at least two digital images according to the themeby: including the digital images in the first cluster in a first sequence in the digital media presentation, and including the digital images in the second cluster in a second sequence within the first sequence in the digital media presentation; and presenting the digital composite media presentation.