Totem

Totem is the official movie player of the GNOME desktop environment based on xine-lib or GStreamer. It features a playlist, a full-screen mode, seek and volume controls, as well as keyboard navigation.

Features include:

Play any xine or GStreamer supported file (depending on the backend chosen, defaults to xine)
LIRC support
Shoutcast, m3u, asx, SMIL and ra playlists support (also usable from a shipped LGPL library)
DVD (with menus), VCD and Digital CD (with CDDB) playback, disc-type automatically detected
TV-Out configuration with optional resolution switching
4.0, 4.1, 5.0, 5.1, stereo and AC3 Passthrough audio output
Full-screen mode (move your mouse and you get nice controls) with Xinerama, dual-head and Viewport support
Remote operation mode to control a running Totem
Seek and Volume controls
Aspect ratio changing, Scaling based on the video's original size
Full keyboard control
Playlist with Repeat and Shuffle modes, with saving feature and drag'n'drop reordering
Gnome and Nautilus integration (Totem registers the file-types, adds a menu item, uses the proxy configuration, saves sessions, and registers pnm, mms, uvox and rtsp schemes, removes playlist items from a disc that's getting ejected)
Video thumbnailer for the file manager
Webcam utility (in development)
Nautilus properties tab
A Mozilla plugin
Nice default logo
Properties window (information about the current movie)
Drag'n'drop and mousewheel actions
Screenshot feature
Brightness, Contrast, Hue and Saturation control
Visualisation plugin when playing audio-only files
Telestrator mode using Gromit
Video thumbnailer
Nautilus properties page
Works on remote displays
Optional GTK+-only build
Automatic external subtitle load, or manual (only on the command-line, use like: totem file:///file.avi#subtitle:file.srt)
DVD, VCD and OGG/OGM subtitles and languages support
Dialog for more accurate seeking
Authentication dialogs when location requires it
Right-to-Left languages support
Online help (in English, German, Spanish and Russian)