
DBZ Singles DVDs- No commercial bumpers/no "previous episode" segments (for the first few releases), no Japanese episode previews throughout the entire release... and of course a very bad dub.
DBZ Orange Brick Sets- Ruined the display by dumping the image into a 16:9 frame (and then they blatantly lied about it), no Japanese episode previews (as far as I know).
Dragon Ball Season Sets- No Japanese episode title cards, wrong ending credits for the first few sagas.
Dragon Box Sets- As far as I know, nothing.
DB Kai- No Japanese episode title cards. Some TV broadcast dub edits slipped into the uncut dub.