I don't know about this episode. They had some pretty wacked-out episodes in the past ("Address Unown" springs immediately to mind, as does several first season episodes due to animation or story, like "The Evolution Solution"), but ultimately this episode failed with me because it failed to be *funny*. I expected it to be wacky because, hey, come on, GIANT pokemon (that aren't robots)? This would have been a great episode if they hadn't made it so straight-faced. One thing I like about wacky episodes is that they make me laugh and/or keep me laughing because they're weird and they don't take themselves seriously. Even "Address Unown" had a sense of humor, up until we got into Larvitar's memories. This episode, however, barely produced a chuckle, which causes it to fail. It would have been nice if the scientist had been like Professor Westwood or Dr. Quackenpoker, now *that* would have been fun. Otherwise, a thumbs down from me.
Oh, and another episode for contrast: "Tentacool and Tentacruel". That wacky episode had a serious and effective social message, but at least it had a nice amount of humor with Nastina.
2/5