Probably the #1 anime I'd watch with my daughter if I have kids someday. This was the first popular series to have an all female main cast with fashionable feminine designs and super powers. broke open the gates for young girls and women worldwide to embrace the medium and jumpstarted an entire genre that is still popular today.
In the same way that boys mimic'd Goku turning into a super saiyan in front of a mirror and pointed Kamehamehas to the sky, so did girls practicing the various sailor moon transformation sequences. It's really just as influential as Dragon Ball in the sense of empowering a specific demographic to be strong, I'd argue even more so when Sailor Moon is telling girls that they can be strong & feminine and makes a genuine effort to offer commentary on gender roles.
I appreciate SM's place in anime - literally not the same without it, and I found the first season to be strong. Haven't seen the others that people say are trash like Crystal that would probably hurt my impression of the series. And I also haven't read the manga to know whether or not the anime improves upon it. So I'm giving it a 9 based on that first season alone.
nominating Space Dandy, Clanaad