my TvNiveauChecker is a little MediaPortal process plugin that forbids watching tv program defined by users.
Or more precisely it gives your Tv plugin a bit more character.
Advantage: Never having a discussion, just one argument - Sorry but MediaPortal has character
The user can define names, that will be stored in the MediaPortal database. At Tv start or channel changing the plugin checks if the current program title match (exact or contains) with the stored "blacklisted" names in the database. If the match is true tv playback will stop after a user defined countdown.
look at the wiki page how to configure the plugin
The plugin also supports gui properties for skin devs.