I'm actually shocked that not everyone is saying SMBSS is the best. It is easily one of my top 2 cartoon shows (TMNT is the other).
I just started watching Zelda on DVD yesterday. My grandpa taped about half of them on VHS for me back in the day so I'm reliving some great memories. After Zelda, which is super awesome just like I remember, I've got the Super Mario Bros. Super Show DVDs to watch. I love how ridiculous it is. It really does hold up very well.
I can't really speak much about SMB3 or the other shows since SMBSS is pretty much the only one I watched, but I have seen some of the others. I don't remember a whole lot about them except that I know I thought the Super Show far outclassed the other Mario shows. Maybe I'll pick up those on DVD, though, if they're as good as people say.
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"Filthy lawbreaker, unhand that vending machine!" - Casey Jones