Volume two of Card Captor Sakura is called "Everlasting Memories", possibly in a reference to episode 6. But for a change, I'll be putting aside the various DVD items for this post, and instead talk about the episode itself.
Episode 5, "Sakura, Panda, and the Cute Shop", apart from sounding rather awkward, shows signs of (dare I say it, what am I saying, of course I do) lower production values than other episodes. This is mostly noticeable in the animation and character designs, where it appears to have been drawn by an outsourced studio (rather than the "in-house" Madhouse Studios) or the B-team of animators or some such. It's not utterly deformed and horrible (like some of the broadcast episodes of Mahou Shoujo Lyrical Nanoha and its sequel, or Utawarerumono, or even the infamous bits of Lost Universe), but when looking at the episode closely for making AMVs or blog posts, it's fairly obvious.
In addition, there were also plenty of strange and unexplained actions and occurences in this episode. It's not the worst offender, but it's up there somewhere. Yes, I know about the whole "it's MAGIC" explanation, and even now, as before, I still don't entirely buy it.