MLookerCL is a media viewer for movies and images, which works consequently in fullscreen mode. It can be easily controlled with mouse, keyboard and touchpad.
It has many specialized options:
Configurable command keys,
finding recursively all viewable media files inside directories,
playlists,
saving of the current movie image at fixed timestamps,
changing the rate or the aspect ratio of a movie,
viewing metadata (e.g. exif),
viewing image-raw files (nef, dng, ..), ... .