DVD releases
Which DVD blurb contained information about an episode that was featured in another volume?
American Dad!
 The "Volume One" release was retitled "Season One" for the Region 2 and 4 releases, however the subsequent releases retained the "Volume" titles.  On the packaging for the "Season 1" release on Region 2 DVD, there was no mention of audio commentaries or some of the bonus features, leading many to mistakenly believe they had been omitted from the release.  The Region 2 and 4 DVDs do not have censored audio tracks on any episodes; however, "Volume 3" has so-called "uncensored tracks" on the set (probably an error from the transfer because the tracks are already automatically uncensored on the set).  The Volume 4 DVD release blurb contained information on the episode "Phantom of the Telethon", which was instead featured on Volume 5.  On Volume 6, despite claims of being uncensored, the bleeps from "Home Adrone", "My Morning Straitjacket", and "G-String Circus" are not removed.