Pokemon Movie 08: Mew to Hadou no Yuusha Lucario

Onmyou Taisenki and Lucario of the Mystery of Mew are both among the best of the best in the Monster Fighting genre of anime. If you enjoyed the deeper emotional conflicts about the bond between a human and their talking animal companion in Lucario and the Mystery of Mew, Onmyou Taisenki is a must watch. Over the course of 52 episodes this show develops an unbreakable bond between its talking animal (the white tiger Kogenta) and his human friend Riku. Onmyou Taisenki is one of the best Pokemon/Digimon style anime out there because its characters are some of the deepest and most likable in its genre, and it does a wonderful job exploring their relationship. read more 

Eureka Seven and the Lucario movie have a few things in common: characters who redefine humanity, glorious angst and guilt, failures at communication, and perhaps most obviously, the theme of humanity's innate conflict with nature. They also feature bumbling young male protagonists, though Ash is much cooler and more able than Renton to start with.