After enjoying four seasons I can tell that this is one of the best series ever, though the writers has been slacking of as of recent. The best feature is the use of the language the way it's supposed to be, uncensored. Television rules are different in European countries. If you are a Spanish speaking person you'd have a blast watching this series. The elder actors and actresses are veteran Spanish talents. Closed caption is not available until the third season. Season six finished up, however the first half of season five just became available on DVD in Spain.
By the way, the DVD version of this series is only playable on PAL video. During the first seasons on DVD you could see behind the scenes, bloopers, etc. Seasons three and four only contains the main episodes.