Third actually. There was the original Fox run, the direct to DVD movies that got somewhat edited into individual episodes for Comedy Central, a standalone Comedy Central run, and now this Hulu one.

==EDIT== Fourth revival if you count the season 6 finale “Overclockwise” being written as a potential series finale when if they were going to be renewed for a seventh season was up in the air, but the renewal happened before the air date so that’s borderline