Yeah, I'm kinda going against the "rules" coz this was prolly one of my firsts, but it's super memorable, and totally impacted my childhood even though the concept of "anime" was unknown to me coz I was a toddler, and there wasn't a huge fuss over anime.
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... Also, REBEL! It's not in my handle just coz it looks cool.
Also, Mazinkaizer to a lesser extent. I remember some rolling pin like robot with spikes, and a pink robot, and mazinkaizer fighting.
When anime first entered my lexicon, I was watching Ronin Warriors, Sailor Moon, and Samurai Pizza cats, and DBZ.
Shortly after, I was watching anime movies, Like Project A-ko (I highly recommend it. I rarely go out and buy anime, but I bought the Project A-ko Boxed set), Dagger of Kamui (I recommend this one, too!), ... La Blue Girl (amazing what you could find in a blockbuster! <.<) some eps of Mamono Hunter Yohko. Dominion Tank Police, Ghost in the shell, MD Geist. this largely from Blockbuster.