Other than Beowulf, his most successful performance-capture film to date, Zemeckis has chosen to deploy this system in children’s films.
Sure enough, the man behind Polar Express, Beowulf, and the Jim Carrey Christmas Carol is the producer of Mars Needs Moms, a laborious affair based on Berkeley Breathed's charming picture book.
In "The Polar Express," "Monster House," "Beowulf," "A Christmas Carol" and now "Mars Needs Moms," Zemeckis — also responsible for such cutting-edge special-effects films as "Forrest Gump" and "Who Framed Roger Rabbit" — has pursued an apparently keen interest in "performance capture" or "motion capture" filmmaking, in which actors are photographed while covered in reflective markers, so their movements and expressions can be electronically tracked and then translated into computer-generated imagery, to create animated characters.
The results, as seen in Zemeckis’s previous mo-cap features A Christmas Carol, Beowulf and The Polar Express, can charitably be described as interesting, but they’re considerably short of enchanting.
Certainly, Zemeckis products "Beowulf," "Monster House" and "A Christmas Carol" have shown that as the technology becomes more refined, the physical animation can look increasingly realistic.