Well, if I'm going to say anything about this episode after just watching it...it was well, not bad, but relatively straightforward. The good was that it was entertaining to see Ash, Serena, and Clemont look utterly horrified while Bonnie was entertained. Gastly, Haunter, and Gengar were also relatively, you know, kind of funny, and it was funny to see that Cole was a ghost all along (hence the fact that he cast no shadow), and everyone reacting in horror at the realization.
Other than that, this was a relatively straightforward filler that wasn't much more than filler. Oh and that pic was taken on July 14. I was rather shocked by that because July 14 happens to be my birthday, albeit in the late 1990's.
Also this isn't the first time real time timeline dates were mentioned in the anime. If you go back to the Flabebe episode, the newspaper TR was reading had the episode's air date on it.