Robotech, Voltron, and Dragon Ball. All three were aired on Toonami segment on Cartoon Network back in the days when I was 6 or so. While Robotech (and all its sub plots and main storyline pieces) is pretty much a mix of several different shows (and several continuity errors can now be found by me after going back and watching the 3 "series" segments), it was still amusing back in the days. Voltron I haven't been able to stand long enough to re watch past the second season due to the blatant abuse of Ctrl+C and Ctrl+V animation style for most of the segments.
I was too little to understand anime back when I fell in love with Sailor Moon and Dragon Ball Z
But by the time "Waking the Dragons" season of Yu-Gi-Oh! came on, I figured it out and got hooked....so it's between those three