My ditto loves to watch documentaries, to mimic stuff good! Since you were wondering. -Signed, Keyboard Ditto’s trainer

Now that is very adorable. If you’d like a recommendation for documentaries you can show your ditto, I highly recommend any of Professor Birch’s, which are available for free on his personal channel. Professor Oak also does regular Pokémon Talks, although these are always filmed in his lab, whereas Birch films pokémon in the wild. (Both are very informative for a trainer, however!)