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I don't know if anyone remembers the show but I do know that Pokemon (as well as DBZ) was referenced in an episode of the CGI show "Reboot". The episode was "My Two Bobs" and the characters were playing a game called Pantsu Hebi X. Here's a pic.
There was also that "Grim Adventures of Billy & Mandy" where they had Hokeymon cards. "Mandy's Monster" was a scream at the end.