Pocket Monsters Diamond and Pearl 186:
Finally, everything comes down to the ultimate confrontation between Satoshi and Shinji. This is where the show has been heading since the 3rd episode, and it feels suitably like the climax of the series as well as their respective arcs. Shinji has really grown a lot on me, from the angry and kind of obnoxious character he was at the start, to becoming the best rival character Satoshi has ever had. It's really interesting to see how much more sympathetic he's gotten, and the brief conversation between him and Reiji was very nice.
One of the most interesting things about the battle, which is touched on some by the characters, is how both Satoshi and Shinji have evolved by becoming more like the other in their battle strategies. Although they're still the opposite of one another in their outlook on things like relationships with their Pokemon, Shinji makes good use of Satoshi's counter shield strategy (and how's that for a callback. The staff here really remembered everything they built up over the whole series), which is remarked on by several characters. He also uses a lot more innovative strategies in mid battle, which is something I generally associate with Satoshi more than any other main character in the show. Not remarked on, but still implicit in the influence of a rival, is the way in which Satoshi keeps changing out Pokemon. Gone are the days where Satoshi would just send out one Pokemon and almost never change out. By the end of the episode he's used four different Pokemon without any of them being knocked out. He's definitely taken a more Shinji like approach to battling, which helps him to always take advantage of the situation. I look forward to seeing how the battle ends in the next episode.