Scratch Cancer Mage, I actually meant Tainted Scholar. Also, scratch Beholder Mage; the problem with that lies in the polymorph line.
Here are two new ones. Persist Spell, and Nightsticks. I don't think DMM is the problem per se; numerous feats and features simply assume that Turn Undead is a strictly limited resource. And it normally is, except if you buy cheap, cheap nightsticks to blast your limit through the roof. Persist Spell makes spells last way longer than they should, and goes a long way towards wrecking the spell resource system.
And, if you're going to put entire classes on the list, you should at least put the Druid and Monk there. The Druid is a full caster, and has innate polymorph ability, and comes with a free beatstick that tends to be better than the party fighter, so it is three classes wrapped in one. Broken straight from level one, which wizards markedly are not.
And the Monk. Need I really say more? We've had so many threads about the class that at some point we were suggesting a subforum to drop the monk threads in. We've had whole guides dedicated to explaining exactly how sucky the monk is. It deserves to be near the top, because it's a class that wildly fails to live up to its promise, and a common trap for newbies.
Okay, my vote for the Polymorph Line (and just put PAO under there, it's the same thing); Candle of Inv; Tainted Scholar; Shivering Touch; the Su/Ex/SLA rule; Prec Apprentice; Persist Spell; Nightstick; the monk; and the monk again.