I recently marathoned the entire series on Netflix. I only remembered the first four seasons back in the day and I dropped it for some reason.
I realized why I did though when I decided to start over on netflix and finish it. The show got a bit crippled when they got rid of the Krelboynes and kind of fukked up Francis' story line (I didn't really like his Alaska bit).
The show stills holds up till the last season though.
Peeps that made the show to me was Hal, Francis, Dewey, Stevie (up to season 5), Malcolm (until they dumbed him down), and the Krelboynes.