I haven't done my list for this topic, let me see the ones I have seen:
Sailor Moon - First Magical Girl series I have watched and its pure awsomeness: Great characters, awsome seiyuu, awsome music, super awsome final episode scenes and frequently developing art style.
Totally Spies - One of my first 'I am obessed with this show' before Sailor Moon. I lost interest drasticly (but the interest is still there) after Sailor Moon got to me.
Cardcaptor Sakura - Watched the dub first but changed to the Japanese because it pwns more than the dub
PPG - I used to watch this show a lot when I used to go to the Philippines during Xmas
W.I.T.C.H. - I used to like it but I lost total interest later
Kim Possible - Girl Powered theme with Sidekick; I used to watch it a lot in the Philippines but I lost lack of interest watching it.
PPGZ - I watched the first few episodes but (AGAIN) lost lack of interest
Tokyo Mew Mew - Only saw the first few and last few episodes on Youtube (because I watched it with a friend in Brisbane who like the Japanese) but I have never gone to finish it due to lack of interest
Fresh Precure - I tried to watch the first episode...but I cringed and lacked interest in this series. Speaking for the whole Precure series, I (used to) never like watching the series because it seemed to have coppied Sailor Moon, had many element similar to the Sailor Moon and the transformation scenes are well...not bad but not better at all...
Heartcatch Precure - Tied with Sailor Moon FTW, I actually loved this series, though it had some Sailor Moon elements, I actually enjoyed all the funny moments, introduction of characters, character and pretty good story development, art and transformation sequences, which I would say they're tied to Sailor Moon transformations due to it's awsome background music. Toei must be really serious about this series...