Pleb list, none of those will earn his respect for anime as a medium. Get him to watch a real masterwork anime, like Gushing over Magical Girls.
• Cowboy Bebop
• Ghost in the Shell
• Porco Rosso
• Spirited Away
• Princess Mononoke
• Jin Roh: The Wolf Brigade
• Akira
You CANNOT watch these and tell me animation is not a valid artistic medium. If you do, you are a fucking liar.