No, really, this should be amusing: “Jimmy Carter to address the Democratic National Convention”. Or, as DrewM puts it in his post headline at Ace of Spades, “A Touching Moment At This Year's Democratic Convention: Jimmy Carter Will Pass The Torch Of Worst Post WWII President To Barack Obama”.
On the Republican side, I am delighted to see that Rand Paul has been invited to speak at the GOP convention, and am eager to hear his speech. He strikes me as someone who’s completely unafraid of the liberal ideological juggernaut, and the miasma of political correctness that emanates from it.
Unrelated update: Romney’s not just a felon, but a murderer (well, it's not like we didn't know that Obama and his minions were going to wage one of the dirtiest campaigns in history, right?)