So I see I missed a discussion on Madoka by a good month. Drat.
And as for the person who wanted series with good dubs, I can only recommend
Baccano! and
Welcome to the NHK, going purely by personal experience.
Question for everyone else here: I'm in the middle of watching the second season of
K-On!, and I love it so far (though I haven't really been able to watch it the last few days

). Once I'm done with that, can anyone tell me which of these series I should watch first? I'm torn between starting
Sayonara Zetsubou Sensei and finishing
Minami-ke or
Princess Tutu, neither of which I have a good start on. If enough people give their opinions, I'll go with the majority vote.
And for the sake of discussion, if it would be of any use to anyone, my favorites are
One Piece and
Azumanga Daioh (the manga for both),
Welcome to the NHK,
PMMM, and
K-On!!. My least favorites are
Darker Than Black: Gemini of the Meteor,
Tengen Toppa Gurren Lagann,
Bleach,
Naruto, and
School Days.