End of discussion.
All kidding aside (...maybe), I'm going to be the crazy one and say I like any controller, including the orange buttoned wonder above, given enough time to get used to it's quirks and foibles. I absolutely reviled the N64, PS1, and PS2 controllers at first, but given many hours of the original Smash Brothers and Grand Theft Auto in it's many 3D forms, they grew on me. On that note, I haven't had enough time with any Xbox or any more recent Nintendo system to get past revulsion, but someday, maybe I will. Or someday I'll find out I truly hate one of those. That'd be nice too.
And I was never a fan of the Dreamcast or Jaguar controllers, either.
That said, and I'm sure this'll come as a shock to all, but I'm going to have to say my favorite is my unnecessarily six-buttoned Sega Genesis controller. The D-pad squeaks and clicks, the B has been used so often it simply refuses to work anymore, X, Y, and Z have always been useless so far as I and my games are concerned, but give me one of those any day, and you will see some magic.
Or I'll die immediately, as most Genesis games were designed to be impossible.