Mike, great work on the DVD guide update. I had a bit of information to share, though I don't know if it's interesting enough to justify an update to the page for it. Two of the 'Perfect Cell Saga' DVDs (Temptation and Perfection) have the Japanese episode numbers listed next to the paragraph episode description on the back. However, the first and fourth releases have the dub episode numbering. So for instance, on the first disc, the episode numbers are (roughly) 137, 138, and 139. The next two discs mentioned above list episodes 150-152ish and 153-155, then the last disc of that series goes back to episode 145-149.
Like I said above, I don't know if this is worth updating the guide for, but I thought it was an interesting tidbit. I also don't know if the issue affected more than the first print of the discs, so that would be something interesting to find out.