Pretty solid episode, despite the way too convenient ending. Archen was cute, and Archeops was badass, and Stunfisk was....Stunfisk. There really isn't much to say about it, but I do like episodes where Ash and the gang help just for the sake of helping. I like how Team Rocket disappeared in smoke, rather than just flying off. Made it seem less like a loss, and makes them come off more threatening.
And I agree Juniper and Fennel really should get another ep.