Gundam Wing. Gundam. smurfing. Wing. You might know the one, the one with only 7 or 8 VAs for every roll, the one where you could identify which main actor is doing background voices with such frequency it became a drinking game, the one where I showed it dubbed with the subtitles on to my weeaboo friend and the sub and dub lined up word for word perfectly.

The one where where even when you have the original japanese with english subs you say "hell with that" and turn on the dub. I remember how much I loved throwing Videes of Gundam Wing on with my friends and just having marathons of it or even just having it as background noise for Magic or DnD. When something gains that kind of familiarity while still being readily enjoyable and not going stale you know you got a good thing.

A strong second for me was Gungrave, which had a similar degree of "switch from sub to dub" from my friends and I, though I didn't get to enjoy it as much as the owner of it alienated himself from everyone by being easily one of the slimiest beings on the west coast.