Kaffeine is a media player for the KDE desktop environment.
In the playlist window you can easily create playlists by just dragging some files or folders from the upper left file browser and drop it onto the playlist. You can choose to hide the file browser to get a larger visualization or hide the playlist and simply double click on a file to play it.
Enjoy watching DVDs with full navigation menus.
If you have DVB devices, you will be presented the DVB configuration dialog and, a few steps later, you will just watch digital TV! You start scanning for DVB channels and choose which ones to add to your channels list. Feel free to watch TV in minimal mode and read program description on screen!