User blog comment:KrspaceT/A DBZ movie!?/@comment-7866392-20140502234109

The Dragon Ball Z movies are stand alone for the most part. Watching the show helps, but it isn't required. Also, to my knowledge, Cooler's Revenge (or any of the DBZ movies) hasn't been given the Kai treatment.

As for the "DBZ replacing Bleach" thing, I seriously doubt it. Nicktoons still has an iron grip on the rights to the show, and the movies are probably just loopholes that Toonami was able to exploit. We might be seeing more movies (including Battle of Gods, if that ever gets dubbed), but the chances of the show itself coming back are pretty slim.