The first three seasons are a campy and fun family-friendly comedy similar to American TV series' The Munsters and The Addams Family. The show is enjoyable if it is not taken seriously. There are silly plots and odd camera angles.
After a short hiatus, the show returned in season four with a much darker and serious approach. The cast of supporting characters got much more intriguing in the final two seasons. Which approach is better depends on one's personal preference, but both are well done.
One thing all five seasons have in common is the unfortunate sexist approach to female characters, especially Clare Thomas's Ingrid. She is constantly denigrated specifically for being "a girl." This might have started off as a running joke, but it became a primary theme of the show.