I see some very nice picks up above. Difficult to say, but I think Steins;Gate wins for me.
If anyone hasn't watched it, Mahou Shoujo Madoka Magica is a magical girl anime with a seriously weighty and complex story and also a top-10 kind of thing. Might appeal to this crowd, check it out.
I can't find much anime necause i don't understand Japanese but i guess i like sailor moon ik i'm not a 90's kid because i'm still a teenager so srry
Any anime I've watched anywhere had English subtitles available, even if they were fan-made. I always watch anime with Japanese audio and English subs - knowing Japanese isn't required to enjoy anime :)